True or false: the normal curve

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   The area under a normal curve is always one.

2. Statement is true

   No

   Statement

   A bigger standard deviation makes the curve taller.

3. Statement is true

   Yes

   Statement

   A z-score counts standard deviations from the mean.

4. Statement is true

   Yes

   Statement

   The empirical rule is the 68-95-99.7 rule.

5. Statement is true

   No

   Statement

   Standardising removes the variation in the data.

Instructions

Tap True or False for each statement.

Explanation