Chapter 9 Test Review

52.5

Find the median: 21, 32, 45, 60, 13, 25

23

Find the median: 87,56,45,23,23,34,64,23,54

18

Find the mode for the set of numbers: 14, 18, 27, 36, 18, 73

7

Find the mode of these numbers: 7, 12, 1, 5, 7, 8, 7

44

Find the mode: 44,29,13,44,15

64

Find the mode: 89,72,34,35,35,35,64,64,77,88,64,88,64

100 and 13.5

Find the mode: 92, 100, 100, 23, 24, 99, 13.5, 13.5

62

Find the range of the following six bowling scores: 205, 222, 174, 236, 185, and 215.

14

Find the range of these numbers: 2, 4, 6, 8, 12, 16

54

Find the range: 2, 8, 10, 12, 56, 9, 5, 2, 4,

88

Find the range: 56, 79, 80, 80, 93, 16, 16, 17, 5

96

Find the range: 67, 35, 67, 67, 13, 108, 109

53

Find the range: 73,45,67,87,98

When working with Quartiles always___

1)Put the list of numbers in order 2)Then cut the list into four equal parts 3)The Quartiles are at the "cuts"

mean = 78.5, median = 76, mode = 76

If a basketball team has scores of 64, 76, 98, 55, 76, and 102 in their first six games, find: the mean score, the median score, and the mode of the scores.

median

A measure of center in a set of numerical data. The median of a list of values is the value appearing at the center of a sorted version of the list - or the mean of the two central values if the list contains an even number of values.

OUTLIER

A number (or value) that is far removed or stands alone from a group

cluster

A number of similar things grouped together

mean = 79.5, median = 83

A student's scores for four exams in a basic math class were 79, 62, 87, and 90. What is the student's mean and median test score?

measure of center

A value that describes how data is centered. The mean, median, and mode are measures of center.

97

Betha's test scores. Find the median: 79, 86, 86, 97 100, 95, 67

2.9

Determine the range of the given data: 1.0, 3.9, 2.1, 3.6, 2.9, 3.8

22

Determine the range of the given data: 15, 34, 12, 25, 27

38

Determine the range of the given data: 52, 69, 84, 81, 79, 46, 81, 73, 68

range

Distance between highest and lowest scores in a set of data.

data

Facts and statistics collected together for reference or analysis

3

Find the mean for the set of numbers: 1, 2, 3, 4, 5

6

Find the mean for the set of numbers: 1, 3, 9, 11

7.5

Find the mean for the set of numbers: 12.5, 8.2, 1.8

16,194

Find the mean for the set of numbers: 29,500; 10,650; 8,900; 15,120; 16,800

10

Find the mean of these numbers: 5, 8, 17, 20, 0

34.5

Find the mean: 39,34,35,42,45,12,

5.5

Find the mean: 9, 7, 2, 4, 3, 5, 9, 6, 8, 0, 3, 8

1

Find the median for the set of numbers: 1, 1, 2, 3, 1, 3, 3, 2, 1, 2, 2, 3, 1

3.2

Find the median for the set of numbers: 1.0, 6.5, 3.2, 1.7, 2.1, 4.6, 3.9

50

Find the median for the set of numbers: 10, 20, 50, 90, 100

11

Find the median for the set of numbers: 5, 9, 11, 13, 15

900

Find the median for the set of numbers: 900, 700, 1100

87

Find the median for the set of numbers: 98, 87, 65, 73, 82, 87, 65, 97, 87, 77

How do you find quartile 1?

Find the median of the first half of numbers

How do you find quartile 3?

Find the median of the second half of numbers

7.5

Find the median of these numbers: 7, 12, 1, 5, 7, 8

median

Middle number

Both are $31,000

Over a 3-year period a woman's annual salaries were $28,000; $31,000; and $34,000. What was her mean annual salary and median annual salary for this 3-year period?

good statistical question

Questions that account for variability in the responses, or many different answers

bad statistical question

Questions that only give you one response

mean

The arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores.

lower quartile

The median of the lower half of data (box & whisker).

upper quartile

The median of the upper half of a set of data.

mode

The value that occurs most frequently in a given data set.

Quartiles

_______ are the values that divide a list of numbers into quarters

outlier

a number in a set of data that is much larger or much smaller than most of the other numbers in the set

The "Interquartile Range" is

from Q1 to Q3. To calculate it just subtract Quartile 1 from Quartile 3

The Range

is the difference between the lowest and highest values.

interquartile range

is the difference of the upper and lower quartiles

The number found when the sum of two or more numbers is divided by the number of addends in the sum. (Simile is Average). (3 + 5 + 7 + 6 + 9) / 5 = 6

mean

The middle number of a list of data when the numbers are arranged in order from the least to greatest

median

the number of numbers that appear most often in a list of data

mode

the difference between the largest number and the smallest number in a list

range

RANGE

subtract the lowest number from the highest

What is quartile 2?

the median

MEDIAN

the number in the middle

MODE

the number you see the MOST