Box plots and outliers
Flashcard
•
Quizizz Content
•
Mathematics
•
9th Grade
•
Hard
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16 questions
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1.
FLASHCARD
Front
The second quartile is the same as the __________________ .
Back
median
2.
FLASHCARD
Front
How can you determine if a data set has outliers using a box and whisker plot?
Back
By identifying data points that fall below Q1 - 1.5 * IQR or above Q3 + 1.5 * IQR.
3.
FLASHCARD
Front
Given the information below, determine which of the answer choices would be considered an outlier. Q1: 48, Median: 65, Q3: 90
Back
none of the above
4.
FLASHCARD
Front
Find all possible outliers for the following set of 15 data items: 108, 31, 75, 87, 79, 88, 89, 118, 51, 89, 174, 95, 51, 70, and 73.
Back
31 and 174
5.
FLASHCARD
Front
What value is the lower quartile?
Back
60
6.
FLASHCARD
Front
What is a box plot?
Back
A graphical representation of a data set that displays the median, quartiles, and potential outliers.
7.
FLASHCARD
Front
What does IQR stand for?
Back
Interquartile Range, which is the difference between the first quartile (Q1) and the third quartile (Q3).
8.
FLASHCARD
Front
How do you calculate the IQR?
Back
IQR = Q3 - Q1.
9.
FLASHCARD
Front
What is the purpose of a box plot?
Back
To summarize a data set and identify its central tendency and variability.
10.
FLASHCARD
Front
What are outliers?
Back
Data points that fall significantly outside the range of the rest of the data.
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