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- Which of the following is the closest estimate of r for the following scatterplot? a. .4 b. 0 c. -.9. d. -.4Given the following data on the relationship between X and Y values ini this pic A. Draw the distribution of the data points in the x-y coordinate system? B. Study the shape of the corresponding curve based on the distribution of the data points, and draw the equation of the line that represents it. C. Calculate the correlation coeficient!The correlation between midterm and final grades for 300 students is 0.620. If 5 points are added to each midterm grade, the new r will be: a. 0.124 b. 0.57 c. 0.62 d. 0.744
- a. The line that is closest to the points and its direction tells the direction of correlation that exists between the variables.trendlinescatterplotcartesian planefrequency polygon b. The following statements are true EXCEPT:A positive correlation exists when high values of one variable correspond to high values in the other variable.A negative correlation exists when high values in one variable corresponds to low values in one variable.A zero correlation exists when high values in one variable corresponds to neither high or low values in the other varA positive correlation exist when low values of one variable corresponds to low values in the other variable. c. The important numerical value in hypothesis testing isparametersample valueconclusioninterpretationd. Which of the following best represents a set of numerical data?meanproportionvariancerangee. In the analysis of a scatterplot, the element/s that should be considereddirectionstrength of correlationboth direction and…ne A small warehouse employs a supervisor at $1350 a week, an inventory manager at $800 a week, six stock boys at $420 a week, and four drivers at $520 a week. nts a) Find the mean and median wage. k The mean wage is $. ch The median wage is $. ntent b) How many employees earn more than the mean wage? an c) Which measure of center best describes a typical wage at this company, the mean or the median? Resou se O A. The median best describes the typical wage. The mean is not a good measure of center because it is affected by the two higher salaries. O B. The median best describes the typical wage. The mean is not a good measure of center because it is affected by the multitude of duplicate salaries. ible Res O C. The mean best describes the typical wage. The median is not a good measure of center because it is affected by the multitude of duplicate salaries, se ase Opti OD. The mean best describes the typical wage. The median is not a good measure of center because it is affected by the…Assume now that taking into account the genders of the persons whose heights were given inQuestion 1, we get the following sets: Height in centimeters – males171 178 157 171 175 182 162 167 166170 154 190 156 180 166 184 161 159Height in centimeters – females152 149 158 166 150 144 167 152 153152 165 154 162 166 153 157 161 152 (a) Construct a side-by-side stem-and-leaf plot for the two data sets. (b) Draw an overlay frequency polygon comparing the two data sets. Use the same classes asin Question 1. (c) What conclusion may we draw about relative heights of males and females in this sample? Justify your answer!