Question

Question 16

1. When a frequency curve for a variable distribution forms mirror images when split down the middle, the distribution is:

		symmetrical.
		negatively skewed.
		positively skewed.
		Non-symmetrical

3 points

Question 17

1. A statistic that tells you the degree to which the values of a variable distribution tend to fall either close or far away from the middle of the distribution is a measure of:

		skewness.
		central tendency.
		dispersion.
		normality.

3 points

Question 18

1. If the variance of a distribution is equal to 1,000,000, then the standard deviation of the distribution will be:

		10
		100
		1,000
		10,000

3 points

Question 19

1.          5     2     7     7     1     6     5   7 2

What is the mode of this distribution?

		2
		5
		7
		The distribution has three modes; 2, 5 and 7.

3 points

Question 20

1. 5     2     7     7     1     6     5   7 2

What is the median of this distribution?

		2
		5
		6
		7

Answer 1