Xiao is gathering research on the number of daily calories people typically consume at various ages. He gathers data about the number of calories eaten by 25 people at each of the following ages: 10, 20, 30, 40, 50, 60, and 70 years. What type of research design is Xiao using?
A) continuous
B) cross-sectional
C) sequential
D) longitudinal

Question

Quizplus · Accepted Answer

Xiao is using a cross-sectional research design as he is gathering data from different age groups at the same time. This type of design allows for comparisons to be made between the different age groups, but it cannot track changes over time within each individual.

Xiao Is Gathering Research on the Number of Daily Calories