# Data Analysis In Psychology

43 Questions | Total Attempts: 301  Settings  This is a quiz concerning Data analysis in experimental psychology. So, let's try out this quiz.

• 1.
Failing to reject the null hypothesis states that you have ____ population(s)?
• A.

2

• B.

1

• C.

0

• D.

4

• 2.
What do you need in order to determine whether or not the groups differed by chance?
• A.

Standard deviation

• B.

Index of variability

• C.

Mean score

• D.

Between score

• 3.
What does central tendency refer to?
• A.

Mean median and mode

• 4.
What can skew the mean?
• A.

Outliers

• 5.
What are three ways to calculate variability?
• A.

Range, variance and standard deviation

• 6.
What is the alpha level of the error rate?
• A.

.05

• 7.
What are two ways to eliminate chance occurance
• A.

Repetition and statistics

• 8.
Statistical test selected is based on______?
• A.

Design

• B.

Variability

• C.

Likelihood of chance

• D.

Standard deviation

• 9.
List the 4 characteristics we need to know about a design
• A.

How many IV's, how many levels, scale of measurement, and between or within subjects

• 10.
What are the three scale of measurements?
• A.

Nominal, ordinal and interval ratio

• 11.
What does a ordinal measurement measure?
• A.

Continuous variables

• B.

Discrete variables

• C.

Categorical information

• D.

Ranking numbers

• 12.
What type of statistical test is used with a between participants design with one IV and two levels?
• A.

Independent samples t-test

• 13.
A t-test gives us ______ that is the ratio of the between group mean difference to the average within group variability.
• A.

T- value

• 14.
What aspect of the t-test gives you the t-value?
• A.

Standard deviation

• 15.
If the t-value obtained is greater than the t-value critical then you can...
• A.

Reject the null

• 16.
What kind of statistical test do you have when your IV is a with-in subject variable
• A.

Dependent samples t-test

• 17.
What statistical test do you use when there are more than 2 levels, in a between group and 1 DV
• A.

One way ANOVA

• 18.
Overall variation in the scores calculated from the scores of all of the participants is known as
• A.

Total variance

• 19.
What is the formula for total variance
• A.

Between group variance divided by within group variance

• 20.
What is a variance estimate?
• A.

Mean square

• 21.
How do you convert the between and within groups variation into mean squares?
• A.

By dividing them by their degrees of freedom

• 22.
What does ANOVA stand for?
• A.

Analysis of Variance

• 23.
What does mean square measure
• A.

The average amount of variable

• 24.
How do you determine the degrees of freedom in an ANOVA test?
• A.

Levels minus 1

• 25.
How do you determine the degrees of freedom in a t-test
• A.

Sample size minus 1

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