A researcher is studying the relationship between sugar consumption and weight gain.Twelve volunteers were randomly assigned to one of two groups.The first group of five participants was put on a diet low in sugar and the second group of the remaining seven participants received 10% of their calories from sugar.After 8 weeks,weight gain was recorded from each participant.Which of the following basic principles of statistical design was not used in this experiment?
A)Control
B)Randomization
C)Repetition
D)Blinding

Question

Quizplus · Accepted Answer

Blinding was not mentioned as part of the experimental design. Control, randomization, and repetition were used: control through the low sugar diet group, randomization in assigning volunteers to groups, and repetition by having multiple participants in each group.

A Researcher Is Studying the Relationship Between Sugar Consumption and Weight