See image.What is the value of the correlation coefficient in the sample? (to the nearest 2 decimals)If running a test for correlation, what is the test statistic? Round to the nearest tenth.If x is the number of months the person has been on a diet and y is the number of pounds lost since starting the program, what is the meaning of b in y = a + bx?People in the program lost 7.4 pounds total in the program on average.People in the program lose 4.2 pounds total in the program on average.People in the program lose 7.4 pounds per month on average.People in the program lose 28.3People in the program lose 4.2 pounds per month on average.People in the program lose 28.3 pounds per month on average. ConsiderXy15401740195020522050152165|226522662370

Given: x y 15 40 17 40 19 50 20 52 20 50 21 65 22 65 22 66 23 70

Answered: What is the value of the correlation…

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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See image.

What is the value of the correlation coefficient in the sample? (to the nearest 2 decimals)

If running a test for correlation, what is the test statistic? Round to the nearest tenth.

If x is the number of months the person has been on a diet and y is the number of pounds lost since starting the program, what is the meaning of b in y = a + bx?

People in the program lost 7.4 pounds total in the program on average.

People in the program lose 4.2 pounds total in the program on average.

People in the program lose 7.4 pounds per month on average.

People in the program lose 28.3

People in the program lose 4.2 pounds per month on average.

People in the program lose 28.3 pounds per month on average.

Consider
X
y
15
40
17
40
19
50
20
52
20
50
15
21
65
|
22
65
22
66
23
70

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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