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Research Methods and Statistics - Quantitative Assessment (Q & A) R100,00
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  3. Cornerstone College, Pretoria, Gauteng
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  5. Research Methods and Statistics (PSY3RM3A)

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Research Methods and Statistics - Quantitative Assessment (Q & A)
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This document includes a quantitative research assignment with questions and answers. I achieved 77% for this assignment.

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  • January 11, 2023
  • 22
  • 2021/2022
  • Essay
  • Unknown
  • A+

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Research Methods & Statistics




PSY3 – RM3A




SHANNON JADE SCHOFIELD - 50393

,Section A: True/false questions [10 marks]

1. The independent-measures t-test uses data from two separate

samples to test a hypothesis about the mean difference between two

populations.


2. If both samples have n = 10, the independent-measures t statistic will have df = 19.


3. If an independent-measures t statistic has df = 20, then there were a

total of 18 individuals participating in the research study.


4. With a repeated-measures study, it is possible to evaluate the difference

between two treatments using only one sample of subjects.




1

, 5. When computing difference scores (D values) the sign of the difference (+

or –) is not important. You need to record only the size of the difference.


6. A researcher reports df = 18 for a repeated-measures t statistic. This

research study used a total of n = 19 participants.


7. In a chi-square test, the sample data are called observed frequencies.


8. It is impossible to obtain a negative value for chi-square.


9. The value of df for a chi-square test does not depend on the sample size (n).


10. Regression analysis is used to assess relationships between two variables.




Section B: Calculations [90 marks]

1. A researcher is interested in the creation of a model to predict 'happiness'

using the 'hours spent on a treadmill' among young adults in South Africa.

Scores were obtained from a sample of 6 people.


Treadmill Happine
hours ss
7 4
8 3

9 8

5 6

4 2

3 1




2

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