Measures of Center & Variability
Pre-Algebra · Flashcards
PRE-ALGEBRA · FLASHCARDS
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QUESTION
What is the range of 12, 5, 20, 9?
QUESTION
How is the mean of a data set calculated?
QUESTION
What is the median of 2, 6, 8, 10?
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ANSWER
7
7
7
. With an even count, average the two middle values:
6
+
8
2
=
7
\frac{6 + 8}{2} = 7
2
6
+
8
=
7
.
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