Research Methods
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- 1.Statistical methods are used to do what?
- A.
Organise data
- B.
Interpret data
- C.
Both
- 2.In order to be an experiment, what must a study do?
- A.
Manipulate the IV
- B.
Manipulate the DV
- C.
Be set in a lab
- 3.What does data collection require?
- A.
Using qualitative measurements to categorise the size or an event
- B.
Using a number to characterise the size of an event
- C.
Both of these
- 4.If i had, small, medium, and large portions available, what would this scale be?
- A.
Nominal
- B.
Interval
- C.
Ordinal
- 5.In a positively skewed distribution, which central tendency has the highest value?
- A.
Mean
- B.
Median
- C.
Mode
- 6.When a distribution of scores corresponds to normal distribution its said to be...
- A.
Symmetrical
- B.
Asymmetrical
- C.
Bimodal
- 7.The formula for variance is...
- A.
Square root of Sum of x^2 - (sum of x)^2/N
- B.
(Sum of x)^2 - sum of x^2/N
- C.
Sum of x^2 - (sum of x)^2/N
- 8.When measuring data at the nominal level, the test is...
- A.
Parametric
- B.
Non-parametric
- C.
Niether
- 9.When measuring data at an ordinal level, the test is
- A.
Parametric
- B.
Non-parametric
- C.
Niether
- 10.When data is at an interval level, the appropriate test is..
- A.
Parametric
- B.
Non-parametric
- C.
Neither
- 11.What is family wise error rate?
- A.
Probability of making type 1 errors across all individual tests made on a set of data
- B.
Probability of making type 2 errors across all individual tests made on a set of data
- C.
Probability of of avoiding any errors
- 12.What maintains the family wise error rate?
- A.
ANOVA
- B.
Post-hoc analysis
- C.
Both
- 13.Family wise error rate...
- A.
Increases with the number of comparisons
- B.
Decreases with the number of comparisons
- C.
Stays the same no matter what comparison
- 14.What is the formula for working out family wise error rate?
- A.
(1- no.comparisons) ^2
- B.
1 - ( 1 - alpha level) ^ no. comparisons
- C.
1 - (2- alpha level) ^ no.comparisons
- 15.What test is used for an unrelated design with nominal data?
- A.
Wilcoxon Ranked Sum
- B.
Chi - Square
- C.
Sign test
- 16.What test is used for an unrelated design with ordinal data?
- A.
Wilcoxon Ranked Sum
- B.
Chi - Square
- C.
Sign test
- 17.What test is used for an unrelated design with interval data?
- A.
Wilcoxon ranked sum
- B.
Un-related t-test
- C.
Chi- Square
- 18.What test is used for a related design with ordinal data?
- A.
Wilcoxon signed ranks
- B.
Wilxocon ranked sum
- C.
Related t test
- 19.What test is used at interval data?
- A.
Sign test
- B.
T test
- C.
ANOVA
- 20.If data is nominal with a related design what test is used?
- A.
Sign test
- B.
T-test
- C.
ANOVA
- 21.At what level does data have to be for ANOVA?
- A.
Nominal
- B.
Ordinal
- C.
Interval
- 22.What correlation is parametric?
- A.
Spearmans
- B.
Pearsons
- C.
Both
- 23.Y = bx + a . What equation do you use to work out b?
- A.
Total xy - totalx*totaly / N*totalx^2 - (totalx)^2
- B.
Totaly - b*totalx / N
- C.
N*total xy - totalx*totaly / N*totalx^2 - (totalx)^2
- 24.Y = bx + a. How do you work out a?
- A.
Totaly - b*totalx / N
- B.
B*totaly - totalX / N
- C.
Totaly-totalx/N
- 25.For wilxocon, for a W value to be significant at 5% what does the W value have to be?
- A.
Less than or equal to the critical value at 5%
- B.
More than or equal to the critical value at 5%
- C.
The same as the critical value at 5%
- 26.In wilcoxon, why do you take the smallest W value if n is the same for both groups?
- A.
Reduce the size of the CV table
- B.
Increase the size of the CV table
- C.
No reason
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