4. Given the following sample data:x 420у 2.80 3.606106255004004505506504805653.753.002.502.703.503.902.953.30a. Calculate the covariance and the correlation coefficient. Discuss what theyrepresent.b. Briefly discuss the relationship between x and y and what do these statistics tellyou.

a. Table including calculations:

Answered: 4. Given the following sample data: x…

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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Compute the Pearson correlation for the following data. Describe the relationship in words. Y. 12 29 3 41 16 6. 24 1 15 10
6f
Topic: Correlation and Regression
Given the following data, do the tasks stated below. a) Identify the independent variable and the dependent variable. b) Construct a scatter plot. c) Determine the direction of the straight line that the data points seem to follow. d) Determine the strength of the correlation between the two variables.
Can a low barometer reading be used to predict maximum wind speed of an approaching tropical cyclone? Let x be the lowest pressure (in millibars) as a cyclone approaches, and let y be the maximum wind speed (in miles per hour) of the cyclone. Suppose a random sample of cyclones gave the following information. x 1014 935 980 955 995 y 50 80 60 135 84 Would you say the correlation is low, moderate, or strong? Positive or negative? If necessary, draw a scatter diagram of the given data. Question 1 options: moderate and negative low and negative strong and negative low and positive moderate and positive
pls answer d,e,f and pls do a full solution without using excel. thank u so much
Listed below are the data for a local television station. This shows the number of weekly advertisements and the projected weekly sales resulting (adjusted by industry). Weekly Radio Spots Sales ($100s) 4 75 10 85 2 62 6 81 8 81 2 57 10 95 6 72 8 89 4 69 a. Show the data in a scatterplot, to demonstrate the relationship between the two variables. b. Compute and interpret the correlation coefficient.
A population data set produced the following information. N = 250. Ex = 9870, E y = 1452, E xy = 84,890 E = 485,590, and E = 135,115. Find the linear correlation coefficient p. Round your answer to three decimal places. p = i
The data shown to the right for the dependent variable, y, and the independent variable, x, have been collected using simple random sampling. X. y 12 140 a. Construct a scatter plot for these data. Based on the scatter plot, how would you describe the relationship between the two variables? b. Compute the correlation coefficient. 15 170 11 130 13 160 15 180 10 120 14 140 10 150 a. Which graph below shows a scatter plot for these data? O A. OB. C. O D. Ay 200-4 Ay 200- 本y 15- Ay 15- 0+ 10 0+ 10 10+ 15 10 15 200 200 Click to select your answer(s).
Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. Suppose a random sample of employees gave the following information. X 12 8 14 32 73 y 50 45 35 28 16 Would you say the correlation is low, moderate, or strong? Positive or negative? If necessary, draw a scatter diagram of the given data. O strong and negative O moderate and positive strong and positive O low and negative
8.
Find the sample correlation coefficient for the following data.

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