Consider the following table of dataXуa. Calculate the least squares line and the correlation coefficientb. Repeat part (a), but this time delete the last point.c. Draw a graph of the data, and use it to explain the dramatic difference between the answers to parts (a) and (b).1311232 10 D1110a. The least squares line is Y=x+(Use integers or decimals for any numbers in the equation. Round to four decimal places as needed.)

Answered: following table of data. a. Calculate…

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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Use this data to answer #4-5: The box plots represent a comparison of the annual salaries of a group of opera and a group of country western singers respectively. Opera Courtry Western Identify the range and five-number summary for the salaries of the opera singers. Don't use the comma to separate the digits (40000 is Okay; 40,000 is not Okay, etc.) Range $ Xmin = $ 20000 Q =$ Median = $ Q3= $ Xmax $ 100000 Tina is a country western singer whose annual salary is twice the median salary of the group of country western singers. Sylvia is the highest paid among the group of opera singers. Which of the following statements is true? Select one: O a. Tina and Sylvia have the same annual salary. O b. Tina's annual salary is higher than Sylvia's. Oc. Sylvia's annual salary is higher than Tina's. O d. The information provided is not sufficient to determine which of the two salaries is higher. 000'001S 000'06s 000 0es 000 02S 000'0es 000'oss 000'0 000 0ES 000'ozs
(a) Find the five-number summary, and (b) draw a box-and-whisker plot of the data. 3 88 6 29 8 79 6 9 5 2 6 2 9 8779 0 (a) Min = 2 (Simplify your answer.) Q, = 5.5 (Simplify your answer.) Q2 = 7 (Simplify your answer.) Q3 = 8.5 (Simplify your answer.) Max = 9 (Simplify your answer.) (b) Choose the correct box-and-whisker plot below. O A. O B. C. OD.
Need asap. Just need help with the last answer.
Which of the following statements is true? 1. The R (ie., R-squared) tells us the percentage of the variation in the dependent variable (cost) that is explained by variation in the independent variable (activity) II The R (e. R-squared) varies from 0% to 100%, and the lower the percentage, the better the fit of the data to a straight line. ONeither statement is true. Only statement I is true. Only statement II is tru. Both statements are true.
Complete parts (a) through (h) for the data below. x 20 30 40 50 60 D 50 y 80 75 71 64 (a) By hand, draw a scatter diagram treating x as the explanatory variable and y as the response variable. Choose the correct scatter diagram below. O A. _^) 70 10+ 10 (b) Find the equation of the line containing the points (30,75) and (60,50). y=x+ (Type integers or simplified fractions.) (c) Graph the line found in part (b) on the scatter diagram. Choose the correct graph below. OA. A 70 10+ N A) N. 70+ 10+ 0 (d) By hand, determine the least-squares regression line. II X+ (Round to three decimal places as needed.) (e) Graph the least-squares regression line on the scatter diagram. Choose the correct graph below. OA. IN 100 1. Q Q X Q Q G 100 Q (f) Compute the sum of the squared residuals for the line found in part (b). (Round to three decimal places as needed.) (g) Compute the sum of the squared residuals for the least-squares regression line found in part (d). (Round to three decimal places as…
Need help with the last answer in the red box as it is wrong.
The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. x 11.4 8 6.8 3.4 2.4 2.2 2.4 0.4 y 13.5 10.7 10.1 6.9 5.9 5.6 6.3 4.2 x = thousands of automatic weapons y = murders per 100,000 residents This data can be modeled by the equation y = 0.85x + 3.97. Use this equation to answer the following; Special Note: I suggest you verify this equation by performing linear regression on your calculator. 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. B) How many murders per 100,000 residents can be expected in a state with 4.3 thousand automatic weapons? Answer= Answer = Round to 3 decimal places.
#2 and #3
Mrs. Pearce conducted a survey in her class on the ages of famous people. The table below shows the results of her survey. Guess Actual Age 18 25 28 39 50 36 72 Which equations could best represent the line-of-best-fit for the given data set? F. G. 15 28 24 42 56 45 80 y = 1.19x - 4.3 H. J. y = 0.81x + 4.56 y = -1.19x +4.3 y = -0.81x - 4.56 DRAN
Forest Fires and Acres Burned An environmentalist wants to determine the relationships between the numbers (in thousands) of forest fires over the year and the number (in hundred thousands) of acres burned. The data for 7 recent years are shown. Number of fires x 57 45 72 69 58 47 84 19 26 51 Number of acres burned y 30 15 62 42 Send data to Excel Part: 0/5 Part 1 of 5 (a) Draw the scatter plot for the variables. umed (100,000) Fires and Acres Burned 8 B FA 3
The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. X Y 11.4 8.4 6.6 13.7 11 9.3 X = thousands of automatic weapons y = murders per 100,000 residents 3.7 7.5 This data can be modeled by the equation y = Answer = 2.4 2.6 2.4 0.4 6.3 5.9 6.2 4.1 to answer the following; Special Note: I suggest you verify this equation by performing linear regression on your calculator. Answer = 0.84x +4.01. Use this equation A) How many murders per 100,000 residents can be expected in a state with 6.2 thousand automatic weapons? Round to 3 decimal places. B) How many murders per 100,000 residents can be expected in a state with 6.9 thousand automatic weapons? Round to 3 decimal places.
The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. X Y 11.4 8.6 7.2 3.6 13.5 11.3 10.1 x = thousands of automatic weapons y = murders per 100,000 residents 2.4 2.8 2.3 0.9 7 6.1 6.6 5.9 4.7 This data can be modeled by the equation y = 0.83x +4.06. Use this equation to answer the following; Special Note: I suggest you verify this equation by performing linear regression on your calculator. Answer = A) How many murders per 100,000 residents can be expected in a state with 2.7 thousand automatic weapons? Answer = Round to 3 decimal places. B) How many murders per 100,000 residents can be expected in a state with 11 thousand automatic weapons? Round to 3 decimal places.

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