Two are true, one is not

Exercise and reference answers

Questions

1. False statement

   Range uses every observation

   Statements

   1. Range uses only the largest and smallest values
   2. Mean deviation uses every observation
   3. Range uses every observation

2. False statement

   Variance is the square root of the standard deviation

   Statements

   1. Variance is the square root of the standard deviation
   2. Standard deviation is the square root of the variance
   3. Variance averages squared deviations

3. False statement

   Median is a measure of dispersion

   Statements

   1. Mean is a measure of central tendency
   2. Median is a measure of dispersion
   3. Standard deviation is a measure of dispersion

Explanation