26june2019 paper1 Q1
0. A shift in attitude in respondents between two points during data collection is called:
- Option : C
- Explanation : Regression to the mean occurs whenever a non-random sample is selected from a population and two imperfectly correlated variables are measured, such as two consecutive blood pressure measurements. The less correlated the two variables, the larger the effect of regression to the mean. Also, the more extreme the value from the population mean, the more room there is to regress to the mean. So, whenever a group is selected with extreme values for one variable and another variable is then measured, the regression effect is high.
