er o the 80 ompenying 8ce er a. Examine the pattern o al 10 ports end sub ective
ID: 2947885 • Letter: E
Question
er o the 80 ompenying 8ce er a. Examine the pattern o al 10 ports end sub ectively determine whether there appears to be a trong oorrelation between x end y b. Find 1 e ve ue?tne oorre a on coe cient r and Cet correlation. c. Remove the point with cocrdinates (1,2) and find the correlation coemicdent r and determine whether there is a inear comelation, d. What do you concluce about the posslole effect from a single pair of values? mine et e there is a a tabla of for the carrelation a. Do the data points appaar ta have a strang linnar crralatian Yos No b. What is the value of the corelation ccefficient for all 10 data points? r- |?Simplify your answer. Round to three decimal places as needed.) ls there a ineer oorrelation between x and y? Use ? 0.05. O A. Yes, becaus the carrelation coefficient is in the critical rugian. O B. No, because the correlatin coefficient is not in the critical regian. ? C. No, because lhe corre aion coefficient is in the critical regior. ? D. Yes, because the oorrelaion c efficient is not in the critical region. c. VWhat is tha comelation coefficient when the point (1,2) is exuded? rRound to three decimal paes as needed.) ls lhere a linear oorrelation between x Bnd y? Use ?-0.05. OA. No, because the correlation coefficient is not in the critical region. B. Yes, because tre oorrelation coemcient is not in the cri cal region. O C. No, because the corelation coefficiant is in the critical region. O D. Yes, because tne oorrelation comcent is in the critical region. d. What do you aandute about the presible effect froma single pair af valu? A single pair of values does not change the conclusion. The effect from a singla pair of values can change tha conclusion. OExplanation / Answer
The statistical software output for this problem is:
Correlation between x and y is:
0.89285948
After point exclusion:
Correlation between x and y is:
0
Hence,
a) Yes
b) r = 0.893
Option A is correct.
c) r = 0
Option A is correct.
d) Option B is correct.
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