Below ar bivariate data sets and their scatter plots. (Note that all of the scatter plots are displayed with the same scale.) Each data set is made up ofsample values drawn from a population.x y11-1-1.01.01.0 7.510+9-8-7-6-10+2.0 8.88-3.0 6.92.02.09-3.03.07-4.0 5.25.0 8.46.0 4.97.0 4.78.0 6.89.0 6.14.04.06-5-5-5.05.04-4-6.0 6.03-23-7.07.021-1-8.08.09.0 9.010.0 10.0 Figure 110.0 4.2 Figure 21-1.0 2.610-1.0 6.710+9-2.0 9.68-3.0 3.62.0 4.59-3.0 3.27-1-4.0 5.04.0 9.26-6-5-5-5.0 4.96.0 2.07.0 5.68.0 9.89.0 5.210.0 8.2 Figure 45.0 4.64-6.0 7.07.0 6.08.0 7.73-3-2-2-1-9.0 7.110.0 8.4 Figure 3Answer the following questions about the relationships between pairs of variables and the values of r, the sample correlation coefficient. The same response maybe the correct answer for more than one question.(a) For which data set is the sample correlation coefficient r closest to 0??Choose one)(b) Which data set indicates the strongest positive linear relationship between itstwo variables?(Choose one)(c) Which data set has an apparent negative, but not perfect, linear relationshipbetween its two variables?(Choose one)(d) For which data set is the sample correlation coefficient r equal to 1?

Solution: Scatter plot: Scatter plot is the graphical technique it is used for identifying the…

Answered: Below a r bivariate data sets and their…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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There is a strong relationship between heterosexual couples attractiveness scores. Therefore, a researcher wanted to determine if husbands attractiveness score may be predicted from their counterparts’ scores. Below are couples attractiveness ratings. Observation Wife (X) Husband (Y) 1 11 14 2 6 7 3 16 15 4 4 7 5 1 3 6 10 9 7 5 9 8 3 8 Complete the following ANOVA table Source SS DF MS F SSreg SSres SStotal
Consider the following data: −10, −10, 0, 3, −10, 3, 3 Step 1 of 3: Calculate the value of the sample Variance. Round your answer to one decimal place. Step 2 of 3: Calculate the value of the sample deviation. Round your answer to one decimal place. Step 3 of 3: Calculate the value of the range.
Sample grade point averages for ten male students and ten female students are listed. Find the coefficient of variation for each of the two data sets. Then compare the results. Males 2.3 3.8 3.9 3.7 2.6 2.4 3.6 3.2 3.9 1.8 Females 2.7 3.6 2.2 3.9 3.7 4.2 1.9 3.9 3.6 2.1 ... The coefficient of variation for males is %. (Round to one decimal place as needed.) The coefficient of variation for females is %. (Round to one decimal place as needed.) Compare the variability of grade point averages of males and females. Choose the correct answer below. O A. The grade point averages of females and males have the same variation. O B. The grade point averages of males are more variable than females. O C. The grade point averages of females and males do not vary. O D. The grade point averages of females are more variable than males.
Two companies produce widgets of varying quality. An important measure of quality is the number of days the widgets can go before they need to be replaced. Do the following data provide evidence that the quality of widgets from the two companies differ? Round the p-value to three decimal places. Do not assume equal variances. Widget Life in Days from Company 1 Widget Life in Days from Company 2 12.0 52.2 14.0 45.8 48.4 44.6 47.0 57.5 50.4 44.2 57.4 50.8 30.8 43.0 30.0
1.) The Test Statistic for this data. (Round answer to 3 decimal places). 2.) The p-value for this sample. (Round answer to 4 decimal places).
A city wants to know if a new advertising campaign to make citizens aware of the dangers of driving after drinking has been effective. The accompanying table shows the number of drivers who have been stopped with more alcohol in their systems than the law allows for each day of the week in the week before and the week a month after the campaign starts. Assume that the data from each population is Normally distributed. Complete parts a through i below. A. Are the data paired? Explain. B. Compute the mean difference C. Compute the standard deviation of the differences. D. Compute the standard error of the mean difference. E. Find the value of the t-statistic. F. How many degrees of freedom does the t-statistic have? G. Is the alternative one- or two-sided? Explain. H. What is the P-value associated with this t-statistic? Assume that the other assumptions and conditions for inference are met.
Please do 3 and 4.
provide an interpretation of the the plots presented here. what do you learn about the data distribution? do any possible concerns emerge? Then, in two paragraphs, continue with an elaboration on the controlling idea, perhaps with an explanation, implication, or statement about significance.

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