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