Research Methods

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    When a distribution of scores corresponds to normal distribution its said to be...

    • Symmetrical
    • Asymmetrical
    • Bimodal
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  • 2. 

    Statistical methods are used to do what?

    • Organise data

    • Interpret data

    • Both

    Correct Answer
    A. Both
  • 3. 

    What does data collection require?

    • Using qualitative measurements to categorise the size or an event

    • Using a number to characterise the size of an event

    • Both of these

    Correct Answer
    A. Both of these
  • 4. 

    When data is at an interval level, the appropriate test is..

    • Parametric

    • Non-parametric

    • Neither

    Correct Answer
    A. Parametric
  • 5. 

    What test is used for an unrelated design with interval data?

    • Wilcoxon ranked sum

    • Un-related t-test

    • Chi- Square

    Correct Answer
    A. Un-related t-test
  • 6. 

    Family wise error rate...

    • Increases with the number of comparisons

    • Decreases with the number of comparisons

    • Stays the same no matter what comparison

    Correct Answer
    A. Increases with the number of comparisons
  • 7. 

    What test is used for an unrelated design with nominal data?

    • Wilcoxon Ranked Sum

    • Chi - Square

    • Sign test

    Correct Answer
    A. Chi - Square
  • 8. 

    In a positively skewed distribution, which central tendency has the highest value?

    • Mean

    • Median

    • Mode

    Correct Answer
    A. Mean
  • 9. 

    For wilxocon, for a W value to be significant at 5% what does the W value have to be?

    • Less than or equal to the critical value at 5%

    • More than or equal to the critical value at 5%

    • The same as the critical value at 5%

    Correct Answer
    A. Less than or equal to the critical value at 5%
  • 10. 

    What is the formula for working out family wise error rate?

    • (1- no.comparisons) ^2

    • 1 - ( 1 - alpha level) ^ no. comparisons

    • 1 - (2- alpha level) ^ no.comparisons

    Correct Answer
    A. 1 - ( 1 - alpha level) ^ no. comparisons
  • 11. 

    What test is used for an unrelated design with ordinal data?

    • Wilcoxon Ranked Sum

    • Chi - Square

    • Sign test

    Correct Answer
    A. Wilcoxon Ranked Sum
  • 12. 

    In order to be an experiment, what must a study do?

    • Manipulate the IV

    • Manipulate the DV

    • Be set in a lab

    Correct Answer
    A. Manipulate the IV
  • 13. 

    What test is used at interval data?

    • Sign test

    • T test

    • ANOVA

    Correct Answer
    A. T test
  • 14. 

    When measuring data at the nominal level, the test is...

    • Parametric

    • Non-parametric

    • Niether

    Correct Answer
    A. Non-parametric
  • 15. 

    What is family wise error rate?

    • Probability of making type 1 errors across all individual tests made on a set of data

    • Probability of making type 2 errors across all individual tests made on a set of data

    • Probability of of avoiding any errors

    Correct Answer
    A. Probability of making type 1 errors across all individual tests made on a set of data
  • 16. 

    If i had, small, medium, and large portions available, what would this scale be?

    • Nominal

    • Interval

    • Ordinal

    Correct Answer
    A. Ordinal
  • 17. 

    In Wilcoxon, why do you take the smallest W value if n is the same for both groups?

    • Reduce the size of the CV table

    • Increase the size of the CV table

    • No reason

    Correct Answer
    A. Reduce the size of the CV table
  • 18. 

    If data is nominal with a related design what test is used?

    • Sign test

    • T-test

    • ANOVA

    Correct Answer
    A. Sign test
  • 19. 

    When measuring data at an ordinal level, the test is

    • Parametric

    • Non-parametric

    • Niether

    Correct Answer
    A. Non-parametric
  • 20. 

    The formula for variance is... 

    • Square root of Sum of x^2 - (sum of x)^2/N

    • (Sum of x)^2 - sum of x^2/N

    • Sum of x^2 - (sum of x)^2/N

    Correct Answer
    A. Sum of x^2 - (sum of x)^2/N
  • 21. 

    What maintains the family wise error rate?

    • ANOVA

    • Post-hoc analysis

    • Both

    Correct Answer
    A. Post-hoc analysis
  • 22. 

    What test is used for a related design with ordinal data?

    • Wilcoxon signed ranks

    • Wilxocon ranked sum

    • Related t test

    Correct Answer
    A. Wilcoxon signed ranks
  • 23. 

    What correlation is parametric?

    • Spearmans

    • Pearsons

    • Both

    Correct Answer
    A. Pearsons
  • 24. 

    At what level does data have to be for ANOVA?

    • Nominal

    • Ordinal

    • Interval

    Correct Answer
    A. Interval
  • 25. 

    Y = bx + a. How do you work out a?

    • Totaly - b*totalx / N

    • B*totaly - totalX / N

    • Totaly-totalx/N

    Correct Answer
    A. Totaly - b*totalx / N
  • 26. 

    Y = bx + a . What equation do you use to work out b?

    • Total xy - totalx*totaly / N*totalx^2 - (totalx)^2

    • Totaly - b*totalx / N

    • N*total xy - totalx*totaly / N*totalx^2 - (totalx)^2

    Correct Answer
    A. N*total xy - totalx*totaly / N*totalx^2 - (totalx)^2

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  • Current Version
  • Mar 14, 2022
    Quiz Edited by
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  • May 28, 2015
    Quiz Created by
    Noyon
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