Judge each claim about shape

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   In a perfectly symmetrical distribution the mean and the median are the same.

2. Statement is true

   Yes

   Statement

   When data are skewed to the left the mean is less than the median.

3. Statement is true

   No

   Statement

   A negative skewness value means the data are skewed to the right.

4. Statement is true

   Yes

   Statement

   The skewness of a normal distribution is zero.

5. Statement is true

   No

   Statement

   A variance can come out as a negative number.

6. Statement is true

   Yes

   Statement

   When data are skewed to the right the mean is the largest of the three centre measures.

Instructions

Tap true or false for each statement.

Explanation