Question

To determine her blood pressure​, samantha divides up her day into three​ parts: morning,​ afternoon, and evening. she then measures her blood pressure at 2 randomly selected times during each part of the day. what type of sampling is​ used

Answer 1

Answer;

-Stratified sampling

Step-by-step explanation;

-A Stratified Sample is sample in which the population is divided into mutually exclusive groups, or strata and randomly drawn from each of these groups.

-With stratified sampling, the researcher divides the population into separate groups, called strata. Then, a probability sample (often a simple random sample ) is drawn from each group.

-Using stratified sampling, it may be possible to reduce the sample size required to achieve a given precision. Or it may be possible to increase the precision with the same sample size.