Vocabulary
Measures of Center
Measures of Spread
Standard Deviation
MAD
100
The average value of a data set is called?
the Mean
100
Find the mean:
122, 139, 189
150
100
Find the range for this data set.
13, 14, 18, 13, 12, 17, 15, 12
Range = 6
100
What the standard deviation squared?
Variance
100
What is the median of the boxplot below?
7.5
200
The median of the first or "lower" half of the data is called?
Quartile 1 (Q1)
200
Find the mean and median:
47, 47, 48, 49, 50, 54, 55
Mean: 50
Median: 49
200
Find the IQR:
36, 18, 12, 10, 9
17.5
200
Shows how the data deviates from the mean.
Standard deviation
200
What are the range and IQR shown on this box plot?
Range: 12
IQR: 6
300
The difference between the third and first quartiles is called?
Interquartile Range (IQR)
300
Find the mean and median:
84, 94, 93, 89, 94, 81, 90
Mean: 89.3
Median: 90
300
Find the range and IQR:
28, 30, 29, 26, 31, 30
Range: 5
IQR: 2
300
Calculate the standard deviation (stdevp) and variance (varp):
36, 18, 12, 10, 9
stdevp = 10
varp = 100
300
What is the IQR of the box plot below?
10
400
Most occurring number of the data set.
The mode
400
Find the mean, median, and mode:
28, 30, 29, 26, 31, 30
Mean: 29
Median: 29.5
Mode: 30
400
Find the Q1 and Q3
13, 14, 18, 13, 12, 17, 15, 12
Q1: 12.5
Q3: 16
400
Calculate the standard deviation:
3, 7, 4, 6, 5
approximately 1.4
400
___________ is a data value that is very different from most of the other data values in a distribution
outlier
500
This is how the data is spread about the mean
Dispersion
500
Which data set has a higher mean?
First set: 13, 14, 18, 13, 12, 17, 15, 12 OR
Second set: 13, 12, 10, 16, 19
First set (14.25)
500
Find the Q1, Q3, and IQR:
125, 136, 150, 119, 150, 143
Q1: 125
Q3: 150
IQR: 25
500
Calculate the mean, MAD, standard deviation (stdevp) and variance (varp): (Round to the nearest tenth)
22, 8, 19, 14, 25, 95, 32, 7, 14, 20, 18, 10, 22, 17, 27, 16
mean = 22.9
MAD = 10.9
stdevp = 19.7
varp = 389.6
500
What percent of the data lies below 44?
75%