A researcher ran a study to determine the relationship between how good a person thinks their memory is and how well they actually do on a memory task. They were asked to score their memory (where 1 = very poor and 10 = excellent). Their actual memory was tested by showing them a video of a minor traffic crash and asking them a series of ten questions. 
 
Participant    Score on Test    Self-Rating       
A                           5                      3       
B                           6                      4       
C                           4                      5       
D                           8                      8       
E                           7                      9       
F                           9                    10       
G                          6                      7       
H                          8                      7       
I                           6                      5       
J                           7                      6     
        
a) What is the Pearson correlation coefficient for the variables 'Score on Test' and 'Self-Rating'?

b) Is the correlation significant at the 95% confidence level? Yes or No. Why?

c) Describe the strength of the correlation.

d) Is the ranked correlation coefficient for the variables 'Score on Test' and 'Self-Rating' different than what you found in a)? If yes,

what is it? If no, explain why not.

Additional Requirement

This kinds of questionis a part of Statistics and describe about a study of people's memory of self rating and actual test. Pearson correlation coefficient has been used here to explain the score on test and self rating.

Word limit 200