Exploring Data Review

Flashcard
•
Mathematics
•
11th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What summary statistics should be used to describe skewed data?
Back
The median and IQR (Interquartile Range) are used to describe skewed data because they are not affected by outliers.
2.
FLASHCARD QUESTION
Front
What does standard deviation measure in a dataset?
Back
Standard deviation measures the spread or dispersion of a set of values around the mean.
3.
FLASHCARD QUESTION
Front
Define a residual in the context of regression analysis.
Back
A residual is the difference between the observed value and the predicted value in a regression model.
4.
FLASHCARD QUESTION
Front
What is the midpoint of a dataset called?
Back
The midpoint of a dataset is called the median.
5.
FLASHCARD QUESTION
Front
What does the distribution of a variable indicate?
Back
The distribution of a variable indicates what values that variable takes and how often it takes them.
6.
FLASHCARD QUESTION
Front
When is the mean a better measure of central tendency than the median?
Back
The mean is a better measure of central tendency when the data is symmetrically distributed without outliers.
7.
FLASHCARD QUESTION
Front
What is the purpose of using the IQR in data analysis?
Back
The IQR (Interquartile Range) is used to measure the spread of the middle 50% of the data and is resistant to outliers.
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