KRS 673 - Lesson 2.2

FALSE

TRUE or FALSE "Variance" is another term for "mean".

FALSE

"50th percentile" is another term for "mean".

TRUE

"Average" is another term for "mean".

FALSE

"Median" is another term for "mean".

"FALSE"

"TRUE" or "FALSE" Among the following terms: mode, mean, standard deviation, and median; mode least belongs with the others.

"TRUE"

"TRUE" or "FALSE" Among the following terms: mode, mean, standard deviation, and median; standard deviation least belongs with the others.

Standard deviation

DEFINITION Represents the spread of scores about the mean.

Central tendency

DEFINITION The single score which best represents all the scores in a distribution.

stratified random sampling

FILL THE GAP After a population of 1,000 high school seniors is divided by sex and size of school attended, the random selection of a sample to represent these proportions of the population is called _______.

24 and 36

FILL THE GAP For a group of normally distributed scores with a mean of 30 and a standard deviation of 6, the middle 68% of the scores will be between __ and __.

4

QUESTION What is the mode(s) for the following set of numbers? 5, 10, 4, 1, 4, 5, 12, 8, 9, 4

Systematic

QUESTION A researcher wishes to survey student opinions on a proposed increase in fees at her university. She decides to select a sample for telephone interviewing by selecting every 20th name in the student directory. What is this type of sampling called?

6

QUESTION What is the median score for the following set of numbers? 3, 11, 8, 13, 5, 3, 6