Descriptive Statistics: Measurement

Question 1

mode

Answer 1

the number found most often

Question 2

mean

Answer 2

what most people just call the average

Question 3

median

Answer 3

the number right in the middle of the list of data

Question 4

central tendency

Answer 4

a way of summarizing some data with a single number

Question 5

arithmetic mean of a set of values

Answer 5

the ratio of their sum to the total number of values in the set

Question 6

geometric mean

Answer 6

the nth root when you multiply n numbers together
uses multiplication and roots
used to calculate the average rate of growth when the growth is determined by multiplication

Question 7

outlier

Answer 7

a number that is significantly greater or smaller than the rest of the data

Question 8

range

Answer 8

the difference between the highest and lowest values

Question 9

four measures of central tendency

Answer 9

mean
mode
median
range

Question 10

bimodal

Answer 10

This means that the most popular values

Question 11

quartile

Answer 11

a group of values and/or means that divide a data set into quarters, or groups of four

Question 12

interquartile range

Answer 12

a value that is the difference between the upper quartile value and the lower quartile value

Question 13

To find the quartiles of a data set use the following steps

Answer 13

Order the data from least to greatest.
Find the median of the data set and divide the data set into halves.
Find the median of the two halves.

Question 14

quantile

Answer 14

a set of values used to divide any frequency distribution into equal groups

Question 15

decile

Answer 15

a specific type of quantile that arranges data into 10 equal parts

Question 16

percentile

Answer 16

a measure that indicates what percent of the given population scored at or below the measure