1. Calculate the linear correlation coefficient for the following data. X = 4,8,12, 16 and Y = 5, 10, 15, 20.

Q: O a.r = -0.2548 O b.r = -0.9382 O c.r= 0.9963 O d.r= 0.0767

A: We have given that,  Which of the following linear correlation Coefficients suggests a weak negative…

Q: Calculate the correlation coefficient r. Make a conclusion about the type of correlation.

A: Correlation coefficient measures the strength and direction of the linear relationship between two…

Q: If y=3.2-7.9x, the correlation between x and y must be negative. Select one: O True False

A: It is given that  y^ = 3.2 - 7.9x

Q: (e) Convert the data to centimeters (1 inch=2.54 cm), and recompute the linear correlation…

A:

Q: 10. The following table shows the approximate number of wireless telephone subscriptions in recent…

A: (a) Obtain the value of the coefficient of correlation The value of coefficient of correlation is…

Q: Find the value of the linear correlation coefficient r. Two different tests are designed to measure…

A: Given data, X Y X*Y X*X Y*Y 23 49 1127 529 2401 25 53 1325 625 2809 28 59 1652 784 3481…

Q: For the following pairs of data points (10, 100), (8, 120), (5, 200), (4, 200), (10, 90), (7, 110)…

A: Follow the steps below to get the correlation coefficient Table in excel: 1) Import the data in the…

Q: Find the linear correlation coefficient, r, then determine whether there is sufficient evidence to…

A:

Q: The correlation coefficient computed for the relationship between a dependent variable Y and an…

A: Given,the correlation coefficient between two variables X and Y is-0.35

Q: What is the correlation coefficient of the following data set? a -.9113 b. .9113 c .9546 d.…

A: From the provided information,The linear equation is y = -18.329x + 112.3R2 = 0.9113

Q: 5. Below are four scatter plots. Fill in the space below each scatter plot with one of the following…

A: The scatterplots and correlation coefficients are given.

Q: Consider the data on the right. Which pair of (x, y) values should be removed to make the…

A: iii)  option is correct (5, 10)

Q: Suppose that for a set of (x,y) data, r = 0.36. Find the linear correlation coefficient. Do not…

A: Here the coefficient of determination is given as 0.36, from this value we need to compute the value…

Q: 2. Describe the direction and strength of the correlations from the following scatterplots. (Are…

A: Perfect correlation: The correlation is said to be perfect if all the points fall in a straight…

Q: 1) Match each of the five scatterplots to the appropriate correlation coefficient and equation of…

A: The scatterplot 2 corresponds to the regression equation (a) y=-2.1+1.4x with an r value of 0.83.…

Q: 5. Use the data set to answer the following: {(0,2), (2,5), (-8,19)} a. Find the coefficient of…

A: Given data set: {(0,2),(2,5)(-8,19)}

Q: What is the value of the linear correlation coefficient "r" for the fol y 2 4 1.

A: The formula for the relation correlation coefficient is given as follows r=∑xi-x∑yi-y∑xi-x2∑yi-y2

Q: Collect the height (in inch) and weight (in kg) of 10 of your friends and make a data table for the…

A: Collecting the data of height and weight of the 10 students   height (inches) x  weight (kg) y…

Q: A value of r close to 0 indicates what type of linear correlation between the two variables?   a.…

A: A value of r close to 0 indicates that either variables have no correlation or weak correlation.

Q: Will the following variables have positive correlation, negative correlation, or no correlation?…

A: Positive Correlation - Two variables are said to be positively correlated if one variable is found…

Q: What type of relationship exists between the two variables x and y in the scatter plot? A.Positive…

A: What type of relationship exists between the two variables x and y in the scatter plot?

Q: For a data set of weights​ (pounds) and highway fuel consumption amounts​ (mpg) of twelve types of​…

A: Given, p-value = 0.009 statement that interprets the​ P-value and includes a conclusion about linear…

Q: given by the following table: y X-4 -2 2 4 -2 0 0.25 0 0 -1 0 0.25 1 0.25 0|0 2 0.25 Find the…

A: Given:         X           -4 -2 2 4 total   -2 0 0.25 0 0 0.25 Y -1 0 0 0 0.25 0.25   1…

Q: An aerobic exercise instructor remembers the data given in the following table, which shows the…

A: Let us determine the linear correlation coefficient for the given data in the next steps.

Q: he data below are the ages and annual pharmacy b ills (in dollars) of 9 randomly selected employees.…

A: Given data, X Y X*Y X*X Y*Y 30 119 3570 900 14161 33 123 4059 1089 15129 37 126 4662 1369…

Q: e. Compute the covariance and correlation coefficient r between the right tire pressure. f. How do…

A:

Q: What is the correct interpretation for the correlation coefficient r=0? No relationship exists…

A: The relation between the two variables is called correlation coefficient (r). The value of r is…

Q: calculate the correlation coefficient to three decimal places, x is 4,5,6,7,8,9,  y,…

A: Given information-

Q: Given two sets of data X and Y, what does a Spearman's Correlation coefficient of 1 indicate about…

A: A Spearman's Correlation coefficient of 1 indicates a perfect positive monotonic relationship…

Q: State whether the following Scatter plot has: 1 - Positive correlation 2 - Negative correlation 3 -…

A:

Q: 4. Put the r-values in order from the weakest to strongest correlation. r = -0.90 r = 0.050 r= 0.80…

A: Given r-values  r = -0.90 r = 0.050 r = 0.80 r = -0.72 r = 0.45 r= -0.88 r = 0.97

Q: Given the following data pairs (x.y), calculate the correlation coefficient. (1, 1.24), (2, 5.23),…

A: To find the correlation coefficient we will use Excel

Q: If the correlation coefficient obtained from data pairs of variables X and Y is 0.98 the strength…

A: correlation coefficient The correlation coefficient r measures the direction and strength of a…

Q: The data below are the number of hours worked (per week) and the final grades of 9 randomly selected…

A: The data below are the number of hours worked (per week) and the final grades of 9 randomly selected…