Make a scatter diagram for the data. Use the scatter diagram to describe how, if at all, the variables are related.Subject A B C D E F GTime watching TV, x 117 5 10 10 8 9Time on Internet, y 12 10 6 15 16 7 16O A.The variables appear to bepositively, linearly related.Ay20-0-0X20OB.The variables appear to benegatively, linearly related.АУ20-0-020TIQO C.The variables do notappear to belinearly related.20-0-0X20GO D.The variables do notappear to belinearly related.20-0-0X20QG Find the equation of the least-squares regression line for the given data. Round values to three decimal places.Xy-5- 10- 3-8O A. y = -0.552x+ 2.097O B. y=2.097x+0.552O C.C. y=0.522x-2.097OD. y=2.097x-0.5524911- 1-2-2-60- 12336-40-8

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Answered: Make a scatter diagram for the data.…

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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The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. 11.6 8.1 7.1 3.9 2.9 2.6 2.1 0.7 13.7 10.7 10.2 7 6.5 6.5 5.7 4.7 thousands of automatic weapons y = murders per 100,000 residents This data can be modeled by the linear equation 0.83x + 4.08 a. How many murders per 100,000 residents can be expected in a state with 10.3 thousand automatic weapons? Round to 3 decimal places. murders per 100,000 residents b. How many murders per 100,000 residents can be expected in a state with 2.5 thousand automatic weapons? Round to 3 decimal places. murders per 100,000 residents
Below is data for two variables, X and Y. Answer the questions that follow. X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 3 -2 -1 4 1 2 4 3 -1 -1 1 1 ___ 6 4 1 ___ 1 0 0 7 6 2 2 ___ 4 4 r = ____
1. Describe in detail what the H0 and H1 are. 2. If this data were to be on a scatterplot, which variable would be x and which would be y? explain why.
The table shows the number of hours 9 students spent studying for a test and their scores on that test. What would be the predictable score when a student studied for 4.5 hours? Hours spent studying, x 0 2 4 5 5 5 6 7 8 Test scores, y 40 51 64 69 73 75 93 90 95 A. 67 B. 68 C. 69 D. 71
Give an example of two variables that have a positive linear correlation. Give an example of two variables that have a negative linear correlation. Give an example of two variables that have no correlation. Below is the height in inches and weight in pounds of eleven individuals Height, x 62 63 66 68 70 72 73 74 74 75 75 Weight, y 195 190 250 220 250 255 260 275 280 295 300 x = 65 inches x = 69 inches x = 71 inches
The scatter plot shows a set of data for the variables x and y. 200 180 160 140 120 100 80 60 40 20 10 10 20 30 40 50 What type of association is shown in the scatter plot? a weak, negative association C a strong, negative association B. a weak, positive association D. a strong, positive association
D. Construct a scatterpiot for the folowing data and use it to comment on between the variables. the form, direction, and strength Age of a person, years 11 12 13 14 15 16 17 18 19 20 Weight, kg 40 42 38 35 45 51 48 48 50 47 Age of a car, 2. 0.5 1.5 4.5 5 years Mileage. kmt. 16 15 10 12 10 12 11 11 10 2.
The following data is the number of tickets sold and the jackpot value for the Mega Millions lottery. The jackpot value is in millions of dollars and the number of tickets sold is in millions. Jackpot value 334 127 300 227 202 180 164 145 255 Number of tickets sold 54 16 41 27 23 18 18 16 26 r= 0.947 tickets sold -10.87 +0.17 (jackpot value) Which is the independent variable and which is the dependent variable? X= independent variable = Y= dependent variable Interpret ². Interpret the slope. Predict the number of tickets sold when the jackpot value is 500 million dollars. Would you feel comfortable using the model for this value? Why or why not.
L8Q6.
Below is data for two variables, X and Y. Answer the questions that follow. X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 3 -2 -1 4 1 2 4 3 -1 -1 1 1 ___ 6 4 1 ___ 1 0 0 7 6 2 2 ___ 4 4 What is the missing value under the (X-MX)2 column?
Which of the below graphical representations tells us how closely the two variables are related and indicates the direction of the changes in respective variables? O a. Scatter diagram O b. Pie chart O c. Ogive O d. Histogram

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