Measures of Variation
11 in the data set 14, 16, 18, 24, 19, 15, 13
Min, Max, Q2/Median, Q1, Q3, IQR, Range?
What is the range
13, 14, 15 in the data set 14, 16, 18, 24, 19, 15, 13
Q1, Q2, or Q3?
What is Q1 (the lower quartile)
You roll a single die numbered from 1 to 6. What is the probability of rolling an odd number, expressed as a fraction?
3/6 or ½
What is the name for a plot that uses a number line to show the distribution of a set of data by using five values.
What is a box-and-whisker plot
Identify the name of the two values that are at the extremes of a box and whisker plot.
Min & Max
28 in the data set 29, 27, 24, 28, 30, 51, 28
Min, Max, Q2/Median, Q1, Q3, IQR, Range?
What is the median
Where do 18, 19, 24 fall in the data set 14, 18, 16, 24, 19, 15, 13
Q1, Q2, or Q3?
What is the upper quartile
The numbers 4 through 14 are placed in a bowl and drawn at random then replaced after being drawn. Is it likely or unlikely you will draw a number less than 7?
Unlikely (3/11)
This is drawn around the quartile values.
What is the box
65 in the data set 91, 92, 88, 89, 93, 95, 65, 85, 91
Min, Max, Q2/Median, Q1, Q3, IQR, Range?
What is the min
3 in the data set 29, 27, 24, 28, 30, 51, 28
Min, Max, Q2/Median, Q1, Q3, IQR, Range?
What is the interquartile range
A jar contains 12 caramels, 7 mints and 16 dark chocolates. What is the probability of selecting a mint expressed as a fraction?
7/35 or 1/5
128.5 in the data set 132, 116, 108, 113, 126, 120, 131, 112, 126
Min, Max, Q2/Median, Q1, Q3, IQR, Range?
What is the upper quartile median
92 in the data set 90, 88, 72, 85, 92, 95, 93, 86, 92, 91
Q1, Q2, or Q3?
What is Q3 (the upper quartile median)
After shooting shots for 5 minutes, a player made 35 shots out of 60. Is it likely or unlikely that if he needs to make two free throws to win the game in a row he will do so?
Likley
Construct a box-and-whisker plot for the data set 4, 7, 5, 3, 9, 6, 4
Q2=5 Q3= 7 Q1= 4 Max= 9 Min= 3
Describe the distribution of the data from "Box-and-Whisker Plot"
The upper half is more spread out compared to the lower half.
107 in the data set 107, 114, 124, 108, 117, 106, 107, 109, 117, 115
Min, Max, Q2/Median, Q1, Q3, IQR, Range?
What is Q1 (the lower quartile median)
What is the result of subtracting the upper quartile from the lower quartile?
What is the interquartile range
There are 15 men on the roster of the baseball team. 2 are catchers, 6 are infielders, 4 are outfielders and the remainder are pitchers. What is the probability that out of a layers chosen at random they would be a pitcher?
3/15
Construct a box-and-whisker plot for the data set 39, 41, 30, 14, 44, 40, 48, 39, 40, 36
Q2= 40 Q3= 41 Q1= 36 Max= 48 Min= 14
The steps to create a box-and-whisker plot.
1.) Median, Greatest value, Least value 2.) Upper and lower quartile medians 3.) Interquartile range 4.) Create box-and-whisker plot