GAT GAT Research and Data Analysis

Question 1

In a GAT data interpretation question, a bar chart shows sales for four quarters. Which quarter had the highest sales if the bars reach 40, 65, 55, and 70 respectively?

Accepted Answer

Quarter 4

Answer

Quarter 4 has the tallest bar at 70, which is higher than all other quarters (40, 65, 55).

Question 2

Which measure of central tendency is MOST affected by extreme outlier values in a dataset?

Accepted Answer

Mean

Answer

The mean is calculated using every value in the dataset, so a single extreme outlier can significantly shift it up or down.

Question 3

A researcher surveys 50 randomly chosen students out of a school of 500. This survey represents a:

Accepted Answer

Random sample

Answer

A random sample is one in which every member of the population has an equal chance of being selected, as described here.

Question 4

On a GAT data table, the row totals add up to 120 and the value in one cell is 30. What percentage of the total does that cell represent?

Accepted Answer

25%

Answer

30 ÷ 120 = 0.25, which equals 25% of the total.

Question 5

Which type of research design examines the relationship between variables without manipulating them?

Accepted Answer

Correlational

Answer

Correlational research measures and observes variables to see if they are related, without controlling or manipulating any variable.

(GAT) General Achievement Test Practice Test

(GAT) General Achievement Test Practice Test

GAT GAT Research and Data Analysis