GAT GAT Research and Data Analysis 1 — Questions and Answers
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?
- Quarter 1
- Quarter 2
- Quarter 3
- Quarter 4 (Correct answer)
Correct answer: Quarter 4
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?
- Mode
- Median
- Mean (Correct answer)
- Range
Correct answer: Mean
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:
- Census
- Convenience sample
- Random sample (Correct answer)
- Systematic error
Correct answer: Random sample
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?
- 15%
- 20%
- 25% (Correct answer)
- 30%
Correct answer: 25%
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?
- Experimental
- Correlational (Correct answer)
- Quasi-experimental
- Double-blind
Correct answer: Correlational
Correlational research measures and observes variables to see if they are related, without controlling or manipulating any variable.
Question 6: A pie chart shows five categories totaling 100%. If one slice is labeled 35%, what fraction of the whole does it represent?
- 7/20 (Correct answer)
- 3/10
- 2/5
- 1/3
Correct answer: 7/20
35% = 35/100 = 7/20 when reduced to its simplest form.
GAT GAT Research and Data Analysis 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?