Question

kai, a seventh - grader, wants to determine the average number of times the families in his neighborhood visit the pool during the summer. he samples the families of four of his classmates. which improvements could kai make to his sample to increase the validity of the results? select three choices. sample more families sample families that have children who are not in seventh grade sample families that regularly use the pool sample families whose answer to the survey question is predetermined sample families living in every third house in the neighborhood

Explanation:

To increase the validity of a sample for determining the average number of pool - visits, a larger and more representative sample is needed. Sampling more families broadens the data set. Sampling families with children not in seventh grade and families living in every third house in the neighborhood helps get a more diverse and representative sample of the neighborhood population. Sampling only families that regularly use the pool or those with predetermined answers would introduce bias.

Answer:

• sample more families
• sample families that have children who are not in seventh grade
• sample families living in every third house in the neighborhood