-15What is the approximate correlation of the data plotted below?y-10●105-$-10O-1 to -0.5-0.5 to 0.5O 0.5 to 1O None of the Above5101

A scatterplot of two variables x and y is given.

Answered: What is the approximate correlation of…

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 multiple correlation (R) is: The correlation between predicted and observed scores. The sum of the simple r's. The highest simple r. Always between 0 and 1 (inclusive).
Please solve for the value of correlation given the following.
Use the graph below to determine a possible range for the correlation coefficient between the two variables. 40 35 30 25 20 15 10 5 10 20 30 40 50 60 70 -0.7 1 O 0.7
Correlation
The following table shows the number of units of a certain item sold by a store over a month in terms of the price in dollars charged by the store. Price in dollars 0.90 1.00 1.15 1.25 1.40 Number sold . 315 280 230 215 195 Use technology to find the correlation coefficient for the data. (Use decimal notation. Give your answer to two decimal places.) correlation coefficien What type of correlation is there between the price and the number sold?
Q6 Given a data set where the response variable is normalized ( centered ) and it is know that the correlation between the individual predictor variable & response variable is, r 0.9. And, it is found that S,-10 and X=100. (i) Find B= a. Write the formula for B= (ii) Find B= (iii) (iv) Find the value the predictor, which yields the response variable to be 1 X Q7 There are several assumptions which are needed to be verified prior to using a univariate regression model and/or doing any traditional model analysis ( e.g. need to verify these assumptions prior to doing the actual regression or F/T tests etc ). Write down the two most essential mathematical assumptions needed by explaining them in a brief written statement (i) 1" = (ii) 2* = answer both questions plese
5If the linear correlation coefficient between the weights (in kg) and heights (in inches) of 6 randomly selected males is 0.95, then 95% of the variation in weights of males can be explained by the linear correlation between height and weight? 1. True 2. False
Would you say the correlation is positive or negative? positive O negative (c) Use a calculator to verify that Σ * Ex=61, Ex Computer. (Round your answer to four decimal places.) 0.9802 Need Help? cloudy = 1007, x2 = 1007, Σy = 634, Σ Master It As x increases from 3 to 23 months, does the value of rimply that y should tend to increase or decrease? Explain y O Given our value of r, y should tend to decrease as x increases. Given our value of r, y should tend to increase as x increases. Given our value of r, we can not draw any conclusions for the behavior of y as x increases. O Given our value of r, y should tend to remain constant as x increases. Q Search = 14 mmm 90,298, and Exy = 9,315. hp 9 |99+ X
y: 30 -10 50 10 1 25 -15-60 15 8 35 20-5 7. 10 9. -40 -5 X: 9. 3 4 6. 0.05. Test for significant positive (linear) correlation at a =
Prove the following
Y 5 10 15 20 25 30 -0.112 0.001 0.091 0.942 0 Based on the plot displayed here, what is a possible correlation between the variables and y?

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What is the approximate correlation of the data plotted below? y 5 -10 .. ● 10 5 -10 -1 to -0.5 -0.5 to 0.5 O O O 0.5 to 1 O None of the Above 10