Stats Benchmark 2 Review Part 2

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•
Mathematics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the 20th percentile in a data set?
Back
The 20th percentile is the value below which 20% of the data falls. For example, in a set of weights, if a 5-pound puppy is at the 20th percentile, it means that 20% of the puppies weigh less than 5 pounds.
2.
FLASHCARD QUESTION
Front
What does a positive z-score indicate?
Back
A positive z-score indicates that the value is above the mean of the data set.
3.
FLASHCARD QUESTION
Front
What does a negative z-score indicate?
Back
A negative z-score indicates that the value is below the mean of the data set.
4.
FLASHCARD QUESTION
Front
How do you calculate the sample standard deviation?
Back
To calculate the sample standard deviation, find the mean of the data, subtract the mean from each data point, square the results, find the average of those squared differences, and then take the square root of that average.
5.
FLASHCARD QUESTION
Front
What is the formula for range in a data set?
Back
The range is calculated as the difference between the maximum and minimum values in the data set.
6.
FLASHCARD QUESTION
Front
What is Q3 in a data set?
Back
Q3, or the third quartile, is the median of the upper half of the data set, representing the value below which 75% of the data falls.
7.
FLASHCARD QUESTION
Front
What is the significance of the median in a data set?
Back
The median is the middle value when the data is ordered, and it divides the data into two equal halves.
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