Compare Scores With Standard Deviation


Using two different measurement instruments (A and B) to measure the same variable, a researcher collected data from a group of subjects. The researcher wants to compare subjects’ scores on the two different sets of data. Descriptive statistics are as follows:

                                    Range             Mean              S.D.

Instrument A               20 to 100         60                    9

Instrument B               30 to 150         92                    15

Data from the first 3 subjects is as follows:

                        Score on A                 Score on B

Subject 1                     68                                124

Subject 2                     32                                58

Subject 3                     84                                130

a) Compare subjects’ scores across tests A and B (SHOW YOUR Z-SCORE CALCULATIONS).


The question belongs to Statistics and it discusses about comparing subjects’ scores with standard deviation.

Total Word Count 171

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.