Measures of Center/ Variability

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an outlier in a data set?
Back
An outlier is a value that is significantly different from the other values in a data set. It can be much higher or much lower than the rest of the data.
2.
FLASHCARD QUESTION
Front
How do you calculate the mean of a data set?
Back
To calculate the mean, add all the numbers together and then divide by the total number of values.
3.
FLASHCARD QUESTION
Front
What is the median of a data set?
Back
The median is the middle value when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.
4.
FLASHCARD QUESTION
Front
What is mode in statistics?
Back
The mode is the number that appears most frequently in a data set.
5.
FLASHCARD QUESTION
Front
What is the range of a data set?
Back
The range is the difference between the highest and lowest values in a data set.
6.
FLASHCARD QUESTION
Front
What is the interquartile range (IQR)?
Back
The IQR is the difference between the third quartile (Q3) and the first quartile (Q1) and represents the range of the middle 50% of the data.
7.
FLASHCARD QUESTION
Front
How does adding an outlier affect the mean?
Back
Adding an outlier can significantly increase or decrease the mean, depending on whether the outlier is much higher or lower than the other values.
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