EAP Interpreting Academic Data 4

Question 1

A research article states that the effect size (Cohen's d) is 0.85. How is this generally interpreted?

Accepted Answer

Large effect

Answer

Cohen's d of 0.85 exceeds 0.80, which is the conventional threshold for a large effect size.

Question 2

A stacked bar chart is used to display data. What advantage does it have over a simple bar chart?

Accepted Answer

It shows how individual parts contribute to a whole within each category

Answer

Stacked bar charts show both the total value and the composition of each bar, revealing part-to-whole relationships within categories.

Question 3

Which measure of central tendency is most affected by extreme outliers?

Accepted Answer

Mean

Answer

The mean is calculated using all values, so extreme outliers can significantly pull it higher or lower, unlike the median which is based on rank position.

Question 4

A longitudinal study tracks the same participants over 10 years. What type of data does this design produce?

Accepted Answer

Repeated measures data over time

Answer

Longitudinal studies collect data from the same individuals at multiple time points, producing repeated measures that allow tracking of change over time.

Question 5

In a frequency table, the 'cumulative frequency' column is increasing. What does each entry in this column represent?

Accepted Answer

The total frequency from the first interval up to and including the current one

Answer

Cumulative frequency is a running total that adds each interval's frequency to all previous intervals, showing how many values fall at or below each point.

EAP - English For Academic Purposes Practice Test

EAP - English For Academic Purposes Practice Test

EAP Interpreting Academic Data 4