Study on People’s Memory Using Pearson Correlation Coefficient


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.


This question belongs to Statistics and it is 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.

Total Word Count 149


Download Full Solution


  • HWA

    this is a very good website

  • HWA

    I have 50 questions for the same test your page is showing only 28

  • HWA

    hi can you please help or guide me to answer my assignments. thanks

  • HWA

    hi can anyone help or guide me to my assignments. thanks

  • HWA

  • HWA

    This solution is perfect ...thanks

  • HWA

    Hello Allison,I love the 2nd image that you did! I also, had never heard of SumoPaint, is something that I will have to exolpre a bit! I understand completely the 52 (or so) youtube videos that you probably watched. Sometimes they have what you want, sometimes they don't! However, it is always satisfying when you are able to produce something that you have taught yourself. Great job!Debra 0 likes

  • HWA

    Perfect bank of solution. 

  • HWA

    great !

  • HWA
    Paul Brandon-Fritzius

    thanks for the quick response. the solution looks good. :)

  • HWA
    tina Johnson

    thnx for the answer. it was perfect. just the way i wanted it. 

  • HWA

    works fine.