# Research Methods

26 Questions | Total Attempts: 230  Settings  Related Topics
• 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