Questions On The Equation For Regression - 1545 Words

Question 3-Results Question 3. The following equation was deduced from the Heredia, (2015) question 3, and it was based on the equation for regression. These are the results: Ã" ®=b+mx or Ã" ®=mx+b, Ã" ®= dependent variableï‚ ®overall, a= constant b, b1=predictor 1ï‚ ®GRE score on quantitative b value, x1 = GRE score on quantitative. b2=predictor 2ï‚ ®GRE score on verbal b value, x2=GRE score on verbal. B3=predictor 3ï‚ ®ability to interact easily b value, x3=ability to interact easily. Equation- Ã" ®=a+b1(x1) +b2(x2) +b3(x3) ï‚ ®Overall college GPA=2.250+0.002 (GRE, quantitative+0.028(ability to interact). Step 1-If the model is significant with a significant value of 0.014, less than 0.05. High F value (3.907), lower significance value (.014). Step 2=Amounted accounted for=R2=.203ï‚ ®20.3% of the variance is accounted for by the predictors. There was a moderate effect size. There is a moderate correlation (R=0.451) between the three predictors variables. They are: (GRE on quantitati ve, GRE scores on verbal, and the ability to interact easily), and the dependent variable is overall college GPA. B values-GRE scores on quantitative has the greatest influence on the overall college GPA (B=.397) followed by the predictor the ability to interact (B=0.145). The predictor GRE on verbal has a negative influence on the overall GPA (B=-0.26). The predictor GRE score on quantitative is the best predictor (significance=.010). The GRE on verbal is significant at .855 and the capability to interact easily isShow MoreRelatedManagerial Econ Chapter 51686 Words   |  7 PagesAn estimated regression coefficient is 10 with a standard error of 5. The null hypothesis is that the partial regression coefficient equals zero. What is the value of the t-statistic for testing the null hypothesis of the regression coefficient? Choose one answer. | a. 2 | | | b. 0.5 | | | c. 5 | | | d. 1 | | Correct Marks for this submission: 1/1. Question 2 Marks: 1 Given the demand function in log-linear form: Q = 120 - 1.5P + 12ADV where Q = quantity, P = price, and ADVRead MoreRegression Analysis1447 Words   |  6 PagesREGRESSION ANALYSIS Correlation only indicates the degree and direction of relationship between two variables. It does not, necessarily connote a cause-effect relationship. Even when there are grounds to believe the causal relationship exits, correlation does not tell us which variable is the cause and which, the effect. For example, the demand for a commodity and its price will generally be found to be correlated, but the question whether demand depends on price or vice-versa; will not be answeredRead MoreReasons For Starbuckss Or Starbucks1746 Words   |  7 PagesStarbucks? This choice is given to SIUE students every day. Our group chose to conduct an experiment that proves that students prefer Starbucks to Kaldi’s. To ensure we got the best results, we created an eight-question survey, which we used as factors in our descriptive statistics and regression outputs. They included: how old are you, what school are you in, what gender are you, do you prefer Starbucks or Kaldi’s, do you enj oy a treat with your drink, do you prefer a store or out in the open, how manyRead MoreThe Price Of The Pumpkin1404 Words   |  6 Pagesmeasure, he settled on finding an equation that could give his customers an estimate on how much they would have to pay for a pumpkin. Fred decided he could do this by taking some measurements of the pumpkin, and then entering the measurements in the equation. While there are many methods of formulating an equation to calculate the weight of a pumpkin, the most practical way would be by using a regression equation. By definition, a regression equation is an equation used in statistics to find out whatRead MoreAutorama Case1023 Words   |  5 Pagesdata on size (â€Å"sqfoot† in square feet) and selling price (â€Å"price† in dollars), which are stored in the ï ¬ le shore.xls. Use the data in that ï ¬ le to answer the following questions: †¢ Use Kstat or Excel to construct a scatterplot for these data with size on the horizontal axis. †¢ Use Kstat to dtermine the estimated regression equation. †¢ Predict the selling price for a home with 2,600 square feet. 3. Accesss bschools2002.xls which contains data regarding the top 30 business schools based on the 2002Read MoreMultivariate Statistical Analysis : Natural And Physical Processes1078 Words   |  5 Pagesinteresting research questions about natural and physical processes are so complex that they require multivariate models and multivariate statistics. There are several types of multivariate models such as Mu ltidimensional Scaling, Principal Components Analysis, Cluster Analysis, Linear Mixed-Effects Modeling, Canonical Correlation, Multivariate Factor Analysis, Logistic regression and so on, each with its own type of analysis (3). Logistic Regression Introduction: Logistic regression is also called LogitRead MoreWhat Relationship Does Exist Between?1612 Words   |  7 PagesCorrelation between Followers and Downloads Linear Regression Model Regression line model is an approach to model the relationship between a scalar dependent variables Y and one or more explanatory variables donated X based on the following equation: Y= a + b .X Therefore To find the relationship between Followers and Download we will find Correlation Between the variables that will tell us the relationship between two variables and we will find regression Line. In our case we have Y as a number of DownloadsRead MoreDoes The Level Of Education You Receive Affect The Amount Of Income You Will Earn? Essay1652 Words   |  7 PagesOur question is, â€Å"Does the level of education you receive affect the amount of income you will earn?† Currently, it is said that you need at least a college degree to earn a decent income. This question is often important because in todays society, the amount of money one makes is important to the quality in which one wishes to live. By looking at data we have found through our research it seems as if the higher your level of schooling, reaching anywhere from a high school diploma to a phD, generallyRead MoreRegression Analysis1445 Words   |  6 PagesReport on regression analysis Dear Sir, Here is our term paper on regression analysis that you have assigned us to submit as a partial requirement for the course –â€Å"Business Statistics 1† Code no-212.While preparing this term paper; we have taken help from internet, books, class lectures and relevant sources. Though we have tried best yet it may contain some unintentional errors. We hope, this term paper will come up with your expectation. We shall be glad to answer any kind of question relatedRead MoreReflection On Acuity As An English II Predictor893 Words   |  4 PagesReflection 27: Acuity as an English II Predictor Methods Linear regression allows researchers to analyze cause and effect or predictive relationships among variables (Creighton, 2007). For this assignment, I set out to conduct a regression analysis in hopes of answering two questions: (1) is there a relationship between student scores on Acuity, our school-wide interim testing program, and their performance on the English II state assessment?, and (2) if the relationship is significant, can Acuity

Biology Mitosis Lab Free Essays

Mitosis and Meiosis Cell Division Lab Part 1-MITOSIS summary: In this experiment first the stages of an onion cell undergoing mitosis are going to be observed and every stage is going to be detected and drawn on paper. A brief description to what is going on should be attached to the pictures. This is important to understand the basics of cell division which is necessary growth,repair and asexual reproduction. We will write a custom essay sample on Biology Mitosis Lab or any similar topic only for you Order Now Second the number of cells undergoing each phase is going to be counted to figure out in which phase the cell remains the most. If interphase is the stage in which the cell grows and prepares for cell division then the number of cells undergoing interphase will be the most. After cells were counted it came out that indeed the number of cells in interphase is the most followed by prophase, metaphase=anaphase and telophase. This makes us come to the conclusion that the longest phase for a cell is interphase in which the cell grows and gets ready to divide. The second longest in prophase in which the chromatin fibers start to form chromosomes. The other phases which follow are very short and quick. Introduction: Mitosis is the division of the nucleus,providing equal amounts of nuclear material to the daughter cells,in eukaryotes. Equal amounts of chromosomes are provided for the forming daughter cells by replicating the DNA and chromosomes before the division. Mitosis occurs in somatic cells and produces 2 daughter cells. The whole process of mitosis consists of 5 stages. 1-Interphase:is the stage in which the cell rests and gets ready for division. Consists of 3 parts. -G1:number of organelles double,size increases. At the end of this phase is a G1 checkpoint which controls is the cell is ready for division or not. S:chromosomes are duplicated. -G2:special proteins and enzymes for cell division are synthesized. 2-Prophase:Centrioles move to opposite poles of the cell. Form spindle fibers which’ll become the microtubules holding the centromere. Chromosomes become visible as long threads and become shorter and thicker. Each chromosome joins another one forming sister chromatids attache d in the middle by a centromere. Nuclear membrane dissolves. 3-Metaphase:spindle fibers from the centrioles attach to the chromosomes at the kinetochore lining the chromosomes in the center of the cell. -Anaphase: The centromeres divide and the sister chromatids separate. The spindle fibers full the chromosomes to different poles of the cell. 5-Telophase: When chromosomes have reached opposite poles a nuclear membrane forms around them. Chromosomes then untwist and stretch becoming invisible again. Spindle fibers break down. At the end of mitosis cytokinesis takes place which is the formation of a cleaved membrane between the two new formed cells to separate them. Materials: -onion root tip cells -microscope Procedure: 1-Observe the onion root tips under the microscope first at 100X and then at 400X. 2-Draw each phase of mitosis you see. -Write a brief description of what you observe in each phase under the picture. 4-Under 400X count the number of cells undergoing different phases. Record data. 5-Calculate the total number of cells. 6-Calculate the percent amount of time the cells spend in each phase. Analysis: The data we collected shows that 52% of the cells were in stage interphase. This indicates that more than the half of the cells are recoverin g from their previous division and preparing to divide again. 40% of the cells were in the second phase prophase while the other phases had a cell percentage number of ~2%. This denotes that prophase is the second longest phase. This can be because it takes a longer time to duplicate the chromosomes than simply lining them up and pulling them apart. Conclusion: Our hypothesis that if interphase is the resting phase then it’ll be the longest was proven true by the data we got from the onion root tips. The number of cells undergoing interphase had the highest number supporting our hypothesis. The complement of interphase is very important for organisms. If interphase isn’t completed before division or if something goes wrong during it many problems could occur like mutations or other things which would affect the proper functioning of the organism. The possibility of errors emerging in this experiment is very low. The only errors could be caused if something was wrong with the microscopes lens or objective. Another thing to be researched could be what factors effect mitosis and if the same process would still occur in a different environment. Part 2-MEIOSIS In this part the concept of meiosis which is the essential of sexual reproduction is going to be observed by using Sondaria fimicola a certain type of mushroom. The colors of the ascospores before and after meiosis are going to be observed to see whether there is crossing over or not. If meiosis is occurring then the newly formed sequences will look different then the ones to begin with. Observe the S. fimicola undergoing meiosis. Look at the ascospores after meiosis and notice the pattern. If the changes are in a 4:4 manner there is no crossing over. If any series of 2 like 2:4:2 or 2:2:2:2 occur it means that crossing over took place. The results we got were composed of different sequences including both patterns with 4’s and 2’s which means that crossing over took place. *Because S. fimicola was not available for the lab,cards with pictures of it undergoing meiosis were used. Introduction: Meiosis is a type of cell division which provides genetic variation by reducing the chromosome number to half and creating haploid cells. Later on a male and female haploid cell will join to form a diploid cell with the right number of chromosomes. Meiosis consists of one DNA replication and two nuclear divisions resulting in 4 daughter cells. The process which provides for genetic variation is crossing over. Crossing over occurs in the early stages when homologous chromosomes move together so that their chromatids form a tetrad. This is called synapsis and allows for the exchange of chromosome sections. In our case the crossing overs will result in different colorings of the ascospores of the S. fimicoli. Materials: -Microscope -S. fimicola meiosis cards Procedure: 1-Study the different phases of meiosis on the cards. 2-Notice the difference between ascospores with sequences of 4’s and 2’s. 3-Count the amount of different sequences present. 4-From the data you gathered calculate the percentage of asci showing crossover. Analysis: Out of a total from 26 sequences only 6 were made up of 4‘s while 20 were composed of different structures of 2‘s. This tells us that 77% of the asci showed crossing over while 23% did not. Conclusion: Our hypothesis that if meiosis is present the new formed asci will have different colors was supported by the outcome of our observations. The fact that different sequences of 2’s emerged from the first pattern of 4’s is prove that crossing over took place. Genetic variation is very important because it is a way of natural selection. Beneficial and strong genes are selected while the others are eliminated. (Survival of the fittest) For future research it could be researched if the crossing over happens randomly or whether there is some order to it and if could be controlled to get a 100% functioning ,ideal organism. How to cite Biology Mitosis Lab, Papers

Valuation of Immovable Properties free essay sample

It is human nature to create controversy even where it does not exist. Expert values have been fighting, in vain, to find out whether valuation is an art or a science. To set this rift at rest, Justice Viscount Simon of the House of Lords in Gold Coast Selection Trust case held that valuation is an art and not an exact science. Mathematical certainty is not demanded, nor indeed is it possible. Thus valuation cannot be tied up by rigid laws of nature or science. It also cannot work under fixed and inflexible set up of principles because it has great dependence in human nature and individual thinking. It can not be said that vacant flats are always required to be valued on comparable sales method. Sometimes circumstances may demand value estimation by Rental Method. Hence two flats in the same building may have different values for the same area. Similarly two adjacent plots in the same area may have different values because one plot falls in garden reservation and another plot is marked for commercial user. We will write a custom essay sample on Valuation of Immovable Properties or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page An old case of human intelligence affecting value of property is worth studying. An open plot of land was offered for sale in a posh locality of Mumbai. But there were no buyers for the plot because it was subjected to the covenant that no construction above 5 would be allowed to be put up in the plot. Owner failed to sell plot for 2 years in spite of his best efforts. One day a person came with an offer of Rs. 10 lacs with condition that the deal be completed in 2 days time. Owner was too happy and he immediately agreed to sell the property, but he also let the buyer know about the covenant. The purchaser replied that he was aware of that restriction. After the deal was completed, the curious vendor asked the purchaser about the proposed use to which the land would be put and he came to know that the purchaser intended to put up a petrol pump on the said plot. Thus human intelligence changed a `bad covenant into a lucrative business use. The plot worth few thousands fetched a price in lacs. That is why it is said that stream of thoughts are the wings gifted by the nature to the whole mankind. With these wings of thoughts, we can solve many riddles. One may wonder why Harshad Mehtas flat in NCPA Apartment at Nariman Point in April 2000 fetched only 460 lacs whereas a similar flat of Chabrias at the same period of time in the same building fetched 603 lacs. Both flats were sold in the open market. The reason for low price in the case of Harshad Mehtas flat was the forced sale under courts auction order. Purchasers exploited the distress condition and offered less price. It was a case of a unwilling seller and sale in the shortest period of time. In the other case, plenty of time for the free sale was envisaged, hence higher price was available.