Which of these variables follow a normal distribution? Select all that apply.Group of answer choicesHeightBlood PressureScores of an easy testIQ

The variables that follow a normal distribution are:

1. Height: The distribution of height is often considered to be normally distributed. This is because the majority of people have a height that is around the average, with fewer people being extremely tall or extremely short.

2. Blood Pressure: Blood pressure is also considered to be normally distributed. Most people have a blood pressure that is around the average, with fewer people having extremely high or extremely low blood pressure.

3. IQ: IQ scores are designed to be normally distributed. The average IQ is set at 100, with most people scoring close to this number. Fewer people have extremely high or extremely low IQs.

The Scores of an easy test may not necessarily follow a normal distribution. If the test is too easy, then the majority of students may score very high, resulting in a skewed distribution.