Measures of Variation Pt I
Graph
Box and Whisker
Measures of Variation Pt II
Standard Deviation
100
For the data set: 14, 16, 18, 30, 19, 15, 13
What is the range?
17
100
The name of this type of graph
What is a histogram?
100
The difference between the 1st and 3rd quartile.
What is the IQR?
100
Find Q2 in the data set 14, 16, 18, 24, 19, 15, 13.
16
100
What is the first step in finding the standard deviation of a data set?
Find the mean
200
Find the median for the data set: 72, 29, 27, 24, 28, 30, 51, 28.
28.5
200
The name of this type of graph
What is a box and whisker plot?
200
All the points listed on a box and whisker plot.
What is the minimum, 1st quartile, median, 3rd quartile, and maximum?
200
Find Q1 the data set 14, 18, 16, 24, 19, 15, 13.
14
200
The standard deviation tells me this about the data.
What is the spread of the data?
300
What are the extreme values of the data set: 91, 92, 88, 89, 93, 195, 60, 85, 91?
Minimum: 60
Maximum: 195
300
Use the data below to create a stem and leaf plot.
2, 5, 8, 10, 11, 15, 16, 17, 22, 25, 29, 30, 33, 37
Stem Leaf
0 2 5 8
1 0 1 5 6 7
2 2 5 9
3 0 3 7
300
What percent of the data is contained on each whisker?
25%
300
Find the IQR of the data set: 22,25,28,29,30,34,51.
9
300
Whats the last step in finding the standard deviation of a data set?
Square root
400
Find Q3 of the data set 132, 116, 108, 113, 126, 120, 131, 112, 126.
128.5
400
A skewed left distribution will (ALWAYS/SOMETIMES/NEVER) have a bigger mean than its median.
NEVER
400
What percent of the data is in the inner quartiles?
50%
400
The following is a list of SAT scores of 8 students: 1400, 400, 1592, 1600, 1300, 500, 1200. In which quartile does the score of 1200 fall?
Q1
400
Removing an outlier will (ALWAYS/SOMETIMES/NEVER) increase the standard deviation.
NEVER
500
Find Q1 of the data set 107, 114, 124, 108, 117, 106, 107, 109, 117, 115.
107
500
A standard(bell) distribution will have (ALWAYS/SOMETIMES/NEVER) have the same mean, median, and mode.
ALWAYS
500
Use the data below to create a box and whisker plot
100, 110, 110, 120, 130, 140, 140, 150, 150, 160, 180, 200
Check with Mr. Suchy
500
What is the resulting percentage of the data when you subtract the upper quartile from the lower quartile?
50%
500
Find the standard deviation of the data below
25, 28, 30, 22, 18, 20, 24, 33
Standard Deviation= 4.77