Unit 1 Lesson 14 Outliers

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•
Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is an outlier in a data set?
Back
An outlier is a data point that differs significantly from other observations in a data set, often due to variability in the measurement or it may indicate a measurement error.
2.
FLASHCARD QUESTION
Front
How does adding a large number (e.g., 40) to a data set affect the mean?
Back
It increases the mean because the total sum of the data increases significantly.
3.
FLASHCARD QUESTION
Front
How does adding a small number (e.g., 1) to a data set affect the mean?
Back
It decreases the mean if the added number is lower than the current mean.
4.
FLASHCARD QUESTION
Front
What is variability in a data set?
Back
Variability refers to how spread out or dispersed the values in a data set are.
5.
FLASHCARD QUESTION
Front
How does adding a number that is much larger than the current data points affect variability?
Back
It may not significantly affect variability if the new number is an outlier.
6.
FLASHCARD QUESTION
Front
How does adding a number that is much smaller than the current data points affect variability?
Back
It can increase variability as it introduces a new extreme value.
7.
FLASHCARD QUESTION
Front
What happens to the variability when a number equal to the mean is added to the data set?
Back
It stays the same because it does not change the spread of the data.
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