Calculate the mean and median for the data set: 6, 7, 12, 8, 7, 4, 8, 8, 7
Statistics

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Mathematics
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9th - 11th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
mean: 7.44 median: 7
2.
FLASHCARD QUESTION
Front
33, 25, 42, 25, 31, 37, 46, 29, 38
What is the interquartile range of the data?
Back
13
3.
FLASHCARD QUESTION
Front
What does the standard deviation tell us about the data set?
Back
How spread out the numbers are
4.
FLASHCARD QUESTION
Front
If 160 people were surveyed, how many people were at least 60 inches tall?
Back
120
5.
FLASHCARD QUESTION
Front
Which of the following stats is incorrect? 70, 87, 93, 95, 82, 94
Back
median: 94
6.
FLASHCARD QUESTION
Front
The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days. About what percent of the products last between 9 and 18 days?
Back
81.5%
7.
FLASHCARD QUESTION
Front
The z-score represents...
Back
the amount of standard deviations a data value is above or below the mean.
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