Research Methods

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

Symmetrical

Asymmetrical

Bimodal

2. Statistical methods are used to do what?

Organise data

Interpret data

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

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

Parametric

Non-parametric

Neither

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

Wilcoxon ranked sum

Un-related t-test

Chi- Square

6. Family wise error rate...

Increases with the number of comparisons

Decreases with the number of comparisons

Stays the same no matter what comparison

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

Wilcoxon Ranked Sum

Chi - Square

Sign test

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

Mean

Median

Mode

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%

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

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

Wilcoxon Ranked Sum

Chi - Square

Sign test

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

Manipulate the IV

Manipulate the DV

Be set in a lab

13. What test is used at interval data?

Sign test

T test

ANOVA

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

Parametric

Non-parametric

Niether

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

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

Nominal

Interval

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

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

Sign test

T-test

ANOVA

19. When measuring data at an ordinal level, the test is

Parametric

Non-parametric

Niether

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

21. What maintains the family wise error rate?

ANOVA

Post-hoc analysis

Both

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

Wilcoxon signed ranks

Wilxocon ranked sum

Related t test

23. What correlation is parametric?

Spearmans

Pearsons

Both

24. At what level does data have to be for ANOVA?

Nominal

Ordinal

Interval

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

Totaly - b*totalx / N

B*totaly - totalX / N

Totaly-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