QUESTION 5 What measures the strength of the correlation? The dependent variable The independent variable The...
QUESTION 5
-
What measures the strength of the correlation?
The dependent variable
The independent variable
The p-value
The correlation coefficient
10 points
QUESTION 6
-
Correlation coefficients are always between which of the following?
-1.0 and +1.0
0 and 100
0 and +1.0
-1.0 and 0
Homework Answers
Add Answer to:
QUESTION 5
What measures the strength of the correlation?
The dependent variable
The independent variable
The...
Which of the following best describes correlation? a.) Correlation measures the strength of the relationship between...
Which of the following best describes correlation? a.) Correlation measures the strength of the relationship between any two variables. b.) Correlation measures the strength of the linear association between two categorical variables. c.) Correlation measures how much a change in the explanatory variable causes a change in the response variable. d.) Correlation measures the strength of the linear relationship between two quantitative variables.
2. Let the following data be given where X is the independent variable and Y is the dependent variable Find the correlation coefficient r a. a and B,onpfrom the sample for the model: b. Estimate...
2. Let the following data be given where X is the independent variable and Y is the dependent variable Find the correlation coefficient r a. a and B,onpfrom the sample for the model: b. Estimate +tx and the actual data Y where ε is the random error between the fitted model f by Y write the linear equation P=" dr-h Predict the value of P when x = 8 c. d.
2. Let the following data be given where X...
Using the following data with x as the independent variable and y as the dependent variable,...
Using the following data with x as the independent variable and
y as the dependent variable, answer the items.
x
-14
-22
18
8
24
y
64
253
159
9
347
у 360 Tools 324 . 288 point 1 point 2 252 216 point 3 point 4 180 144 108 point 5 72 36 0 -25 -20 -15 -10 -50 5 10 15 20 25 x b. Compute the correlation coefficient. (Round your answer to 4 decimal places.) Correlation coefficient...
The data shown to the right for the dependent variable, and the independent variable, xhave been...
The data shown to the right for the dependent variable, and the independent variable, xhave been collected using simple random sampling 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 X 10 110 14 130 12 120 13 140 15 100 11 100 14 150 11 130 a Which graph below shows a cutter plot for these data? ОА ос. 180...
Determine whether each of the following statements regarding the correlation coefficient is true or false. The...
Determine whether each of the following statements regarding the correlation coefficient is true or false. The correlation coefficient equals the proportion of times that two variables lie on a straight line. The correlation coefficient will be +1.0 if all the data points lie on a perfectly horizontal straight line. The correlation coefficient measures the strength of any relationship that may be present between two variables. The correlation coefficient must always lie between –1.0 and +1.0.
please answer all question (2-5) thanks Question 2 1 pts As the number of hours a...
please answer all question (2-5) thanks
Question 2 1 pts As the number of hours a student studies increases, the number of errors made on the exam decreases. There is a strong relationship between these variables. Select the value for the pearson correlation (r) that would be appropriate 0-0.7 0-0.4 o 0.6 o 1.0 Question 3 1 pts The following APA summary was reported for a one-sample t-test (two-tailed, alpha = .05). t(15) = 3.3, p = .003 Which of...
We want to determine the strength of the relationship between the independent variable "age" and the...
We
want to determine the strength of the relationship between the
independent variable "age" and the dependent variable "intelligence
quotient". In our sample, the mean of the variable "age" is equal
to 14, and its variance is equal to 46,4. The mean of the variable
"intelligence quotient" is equal to 102, and its variance is equal
to 0. The list of corresponding data for the two variables is
pictured below.
Determine the value of the correlation coefficient between the
two...
8) Suppose the correlation coefficient between two variables is -0.897. Does the dependent variable increase or...
8) Suppose the correlation coefficient between two variables is -0.897. Does the dependent variable increase or decrease as the independent variable increases? O a. The dependent variable will decrease as the independent variable increases. O b. The dependent variable will remain constant as the independent variable increases. The dependent variable will remain constant as the independent variable increases. The dependent variable will increase as the independent variable increases.
4) Which of the following statements regarding the correlation coefficient is not true?
Which of the following statements regarding the correlation coefficient is not true? A) The correlation coefficient has values that range from-1.0 to 1.0 inclusive. B) The correlation coefficient measures the strength of the linear relationship between two numerical variables C) A value of 0.00 indicates that two variables are perfectly linearly correlated D) All of these are true statements
A study was conducted to examine the relationship between variable X (independent variable) and Y (dependent...
A study was conducted to examine the relationship between variable X (independent variable) and Y (dependent variable). The Excel output is given in the "Graphs Document". A data point in the above regression is (x,y) = (191,382). What is the residual of this data point? O 72.36 70.33 o o 0-69.75 O 81.25 O None of the options t Intercept X variable Coefficients 95.84 1.13 Standard Error 116.65 0.132 Stat 0.821 8.547 P-value 0.418 0.0000005
2. Let the following data be given where X is the independent variable and Y is the dependent variable Find the correlation coefficient r a. a and B,onpfrom the sample for the model: b. Estimate +tx and the actual data Y where ε is the random error between the fitted model f by Y write the linear equation P=" dr-h Predict the value of P when x = 8 c. d.
2. Let the following data be given where X...
Using the following data with x as the independent variable and
y as the dependent variable, answer the items.
x
-14
-22
18
8
24
y
64
253
159
9
347
у 360 Tools 324 . 288 point 1 point 2 252 216 point 3 point 4 180 144 108 point 5 72 36 0 -25 -20 -15 -10 -50 5 10 15 20 25 x b. Compute the correlation coefficient. (Round your answer to 4 decimal places.) Correlation coefficient...
The data shown to the right for the dependent variable, and the independent variable, xhave been collected using simple random sampling 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 X 10 110 14 130 12 120 13 140 15 100 11 100 14 150 11 130 a Which graph below shows a cutter plot for these data? ОА ос. 180...
please answer all question (2-5) thanks
Question 2 1 pts As the number of hours a student studies increases, the number of errors made on the exam decreases. There is a strong relationship between these variables. Select the value for the pearson correlation (r) that would be appropriate 0-0.7 0-0.4 o 0.6 o 1.0 Question 3 1 pts The following APA summary was reported for a one-sample t-test (two-tailed, alpha = .05). t(15) = 3.3, p = .003 Which of...
We
want to determine the strength of the relationship between the
independent variable "age" and the dependent variable "intelligence
quotient". In our sample, the mean of the variable "age" is equal
to 14, and its variance is equal to 46,4. The mean of the variable
"intelligence quotient" is equal to 102, and its variance is equal
to 0. The list of corresponding data for the two variables is
pictured below.
Determine the value of the correlation coefficient between the
two...
8) Suppose the correlation coefficient between two variables is -0.897. Does the dependent variable increase or decrease as the independent variable increases? O a. The dependent variable will decrease as the independent variable increases. O b. The dependent variable will remain constant as the independent variable increases. The dependent variable will remain constant as the independent variable increases. The dependent variable will increase as the independent variable increases.
A study was conducted to examine the relationship between variable X (independent variable) and Y (dependent variable). The Excel output is given in the "Graphs Document". A data point in the above regression is (x,y) = (191,382). What is the residual of this data point? O 72.36 70.33 o o 0-69.75 O 81.25 O None of the options t Intercept X variable Coefficients 95.84 1.13 Standard Error 116.65 0.132 Stat 0.821 8.547 P-value 0.418 0.0000005
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