Measures of Center
Find the mode of: 10, 20, 15, 11, 10, 15, 22, 10
What is 10?
Find the range of: 10, 6, 11, 14, 25, 13
What is 19?
Which measure is most affected by an outlier, the mean or median?
What is mean?
Find Q2 of the following data set.
85 , 50 , 99 , 29 , 27 , 70 , 99
What is 70?
Find the median: 8, 22, 15, 11, 10
What is 11?
Name any outliers: 10, 37, 42, 38, 75, 40, 33
What is 10 and 75?
When do you use the mean vs. the median for measuring the center of a data set?
Mean = When the data distribution is symmetric
Median = When the data distribution is skewed
Find Q2 of the following data set.
53 , 42 , 89 , 75 , 60 , 20 , 31 , 54
What is 53.5?
Find the median and mode: 25, 16, 18, 16, 24, 30
What is median 21 and mode 16?
Find the first and third quartiles : 12, 10, 14, 16, 8
What is Q1 = 9 and Q3 = 15?
What is the median of the data?
22, 14, 22, 14, 20, 30, 40, 50, 45, 60
What is 26?
Find Q1 of the following data set.
28 , 74 , 48 , 59 , 85 , 32 , 93
What is 32?
Find the mean of: 10, 15, 22, 30, 45
What is 24.4?
Find the interquartile range: 10, 6, 22, 12
What is IQR = 9?
Find the mean of : 30, 40, 20, 100, 400
What is mean = 118?
Find Q3 of the following data set.
71 , 36 , 27 , 42 , 25 , 80 , 95 , 83 , 51 , 55 , 80
What is 80?
Mr. Santiago bowled 150, 148, 177, 201 and 184. What is his mean score?
What is 172?
Thinking of the 5-number summary, find the measures of variation.
17, 52, 22, 43, 41
IQR = 28 and Range = 35
Find the mean with and without the outlier:
50, 60, 70, 80, 200
What is mean with outlier = 92?
What is mean without outlier = 65?Find Q1 of the following data set.
65 , 84 , 48 , 45 , 87 , 79 , 21 , 83
What is 46.5?