Question

A video game was previewed to a group of 30 teenagers. The teens were asked to rate the quality of the graphics and indicate if the game was too violent.

(a) Identify whether the data are cross-sectional or a time series.

​(b) Indicate if each variable is​ categorical, ordinal, or numerical​ (If a variable is​ numerical, include its units if​possible).

​(c) List any concerns that you might have for the accuracy of the data.

Answer 1

(a)

The data are cross - sectional because it is observational study that analyses data from a population at a specific point of time

(b)

Variable: Graphics in video game:

Type of variable: Ordinal, because it can ranked according to the degree of violence

(c) The data on the rating of the degree of violence in a video game may not be accurate because each teenager has his own liking/ disliking of violence in a video game and this individual attitude towards violence in a video game will reflect on the rating. To avoid this discrepancy, all teenagers should be chosen to have identical attitude towards violence in a video game.