study set for quiz 1; measures of central tendency

study set for quiz 1; measures of central
tendency




1.) central tendency

2.) data

3.) mean

4.) median

5.) mode ...ANSWER...1.) method of summarizing or comparing single-variable sets of data

2.) information; numbers

3.) the average of a set of data; the sum of the elements divided by the number of elements

4.) the middle item in a set of ordered data

5.) the item that appears most often in a set of data



find the mean for the given set of data

18, 15, 22, 18, 25, 19, 23 ...ANSWER...20



find the mean for the given set of data

-4, -3, -1, -1, 0, 1 ...ANSWER...-1 1/3



find the median for the given set of data

0.6, 1.1, 2, 0.87, 1.23 ...ANSWER...0.985



Skylar's grades on four math tests are 85, 78, 77, and 69. What does Skylar need to score on the next
test in order to have a mean score of 80? ...ANSWER...91

, use the data set shown below to complete the sentence

3, 3, 4, 5, 5, 9

the mean ___________ the median ...ANSWER...is greater than



in which of the following data sets is the mean equal to the mode? ...ANSWER...4, 5, 5, 5, 6



find the mode for the given data set

stem leaves

1 6, 8

2 3, 5, 6

3 4, 7, 7

4 0, 1, 6 ...ANSWER...37



the following frequency table shows the observed high temperatures in Buffalo, New York, in May 2007.

temperature frequency

50-59 5

60-69 12

70-79 9

80-89 5



which interval contains the median temperature? ...ANSWER...60-69



1.) dispersion

2.) inter-quartile range

3.) lower quartile

4.) outlier

5.) percentile

6.) range

7.) upper quartile ...ANSWER...1.) how data is distributed