1 Exampromax - Stuvia US
STA 210 Ch 12 HW Questions and Answers
100% Correct Answers Already Graded A+
Q: What is the measurement level of the two variables "smoking status" and
"myocardial infarction"?
Ans: Both are nominal.
Q: What is the measurement level of the two variables "number of Nobel
Prize winners" and "nation's chocolate consumption"?
Ans: Both are ratio.
Exampromax - Stuvia US
Q: Which of the following is the correct scatterplot of variable y1 on the
vertical axis versus variable x1 on the horizontal axis?
Ans: ii
Q: Compute the correlation coefficient for the variables x1 and y1. What is
it?
Ans: 0.82
Q: Compute the correlation coefficient for the variables x4 and y4. What is
it?
Ans: 0.82
Q: Which of the following is the correct scatterplot of Javelin Distance on
the vertical axis versus Hurdles Time on the horizontal axis?
Ans: i
Q: Compute the correlation coefficient for the variables Javelin Distance
and Hurdles Time. What is it?
Ans: -0.252
STA 210 Ch 12 HW Questions and Answers
100% Correct Answers Already Graded A+
Q: What is the measurement level of the two variables "smoking status" and
"myocardial infarction"?
Ans: Both are nominal.
Q: What is the measurement level of the two variables "number of Nobel
Prize winners" and "nation's chocolate consumption"?
Ans: Both are ratio.
Exampromax - Stuvia US
Q: Which of the following is the correct scatterplot of variable y1 on the
vertical axis versus variable x1 on the horizontal axis?
Ans: ii
Q: Compute the correlation coefficient for the variables x1 and y1. What is
it?
Ans: 0.82
Q: Compute the correlation coefficient for the variables x4 and y4. What is
it?
Ans: 0.82
Q: Which of the following is the correct scatterplot of Javelin Distance on
the vertical axis versus Hurdles Time on the horizontal axis?
Ans: i
Q: Compute the correlation coefficient for the variables Javelin Distance
and Hurdles Time. What is it?
Ans: -0.252
