Use the given data set to complete parts (a) through (c) below. (Use a-0.05.)109.14Click here to view a table of critical values for the correlation coefficient.Xy1048-64-2488.13a. Construct a scatterplot. Choose the correct graph below.OA.AY*****138.75B.Ay1040644-24098.760**************12 10119.278 9148.09C.104B64-2D66.1248 12 1643.09129.14OD.104064:2*****77.26Q54.7419:b. Find the linear correlation coefficient, r, then determine whether there is sufficient evidence to support the claim of a linear correlation between the two variables.The linear correlation coefficient is r=(Round to three decimal places as needed.).

Given that,Sample size Assume the level of significance The data is given on x and y.

Answered: a. Construct a scatterplot. Choose the…

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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1. The table below gives the number of hours a student spent studying for a test and their grade. a.) Draw a scatter plot of the data. Hours Spent Studying 3 2 2 5 1 0.5 4 3 Grade on Exam 84 77 92 70 60 90 75 b.) Draw the best fit line through the points (5,92) and (1, 70). Grade on Exam 90 80 70 60 c.) Is the correlation positive, negative, or none? f.) Write the equation of the best fit line. 50 d.) Find the slope of the best fit line: (5, 92) & (1,70) (round to one decimal) 0 2 4 6 8 10 Hours Spent Studying e.) What does the slope mean? T1-04 Plus TEXAS g.) Predict the grade for a student who studied for 2.5 hours. Is this an extrapolation or interpolation?
4. Consider the following data: XINMASSN 1 2 3 4 5 6 7 y 6 7 5 4 3 1 2 a) Make a scatterplot of these data. The variable labeled "x" should be plotted along the x-axis. Describe the pattern. b) Find the correlation coefficient for these data.
Page 34 Compute the correlation coe cient, r, for the following table: X 10 y 5 12 15 16 1 4 6 18 1 9 7 8 1 25 12 14 17 3 6
The asking prices (in Rands) and the actual selling prices (in Rands), after bargaining, of 8 commodities are given below. Commodity A D E F G H Asking price, x 150 350 400 750 100 650 600 250 Selling price, y 120 200 400 550 80 450 350 200 Find the correlation coefficient for the above data. A. 0.8224 B. 0.3722 С. 0.9438 D. 0.5318 Activate
Please help me answer the questions about correlation according to the graph. So would it be linear, strong, positive, or no association? Or negative and weak?
9. Tell whether the correlation coefficient would be closest to -1, 0 or 1. a. b. с. 150 150 150 100 100 100 50 50 50 0 2 4 6 x 0 2 4 6x 0 2 4 6 x
Bt.20.
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…
2.) The table shown below are the raw scores obtained by eight (8) students. Is there a relationship in their scores in Mathematics and in Biology? Use Pearson Product-Moment Coefficient of Correlation to establish the relationship. Student 1 3 4 6. 8. Mathematics (x) 6. 3. 4 3 Biology (y) 8. 3. 7 4
23. Find the value of the linear correlation coefficient r. Show work. The paired sample data below consists of the temperatures on randomly chosen days and the amount a certain kind of plant grew in millimeters. Temperature 62 76 50 51 71 46 51 44 79 Growth 36 39 50 13 33 33 17 6 16
The following scatterplot graphically displays the average weekly spending on tobacco products and alcoholic beverages for each of 11 regions in Britain. 1. The point representing Northern Ireland is an outlier. What is the alcohol spending in Northern Ireland? AC 4, 3.6, 4.6 2.5 ["", "", "", ""] 2. The correlation with all 11 regions is 0.224. Which one is the most plausible value for the correlation of the 10 remaining regions with Northern Ireland (the outlier) removed (no calculation necessary)? AC -.05, .01, 1.09, .78 ["", "", "", ""] 3. Which one of the following values is the best choice for the range of tobacco spending across all 11 counties? AC 4.6, 4.0, 2.6, 2.0 ["", "", "", ""] 4. Which one of the following values is the best choice for the IQR of the alcohol spending across all 11 counties? AC .81, 1.39, .25 2.17 ["", "", "", ""] 5. Which…
K Refer to the accompanying scatterplot. The four points in the lower left corner are measurements from women, and the four points in the upper right corner are from men. Complete parts (a) through (e) below. OA. There appears to be a linear correlation because the points form a line. OB. There appears to be a linear correlation because the points form an obvious pattern. OC. There does not appear to be a linear correlation because the points do not form a line. O D. There does not appear to be a linear correlation because the points form an obvious pattern. AY OA. There appears to be a linear correlation because the points form an obvious pattern. OB. There appears to be a linear correlation because the points form a line. OC. There does not appear to be a linear correlation because the points form an obvious pattern. OD. There does not appear to be a linear correlation because the points do not form a line. 12- 9- 0 The correlation coefficient for the points in the lower left corner…

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