
Empirical Rule & Z-Score practice
Flashcard
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What percentage of data falls within 1 standard deviation of the mean according to the empirical rule?
Back
68%
2.
FLASHCARD QUESTION
Front
What shape is a normal distribution curve?
Back
Bell curve
3.
FLASHCARD QUESTION
Front
What percentage of students have a GPA between 2.3 and 3.5 if the mean is 2.9 and standard deviation is 0.6?
Back
68%
4.
FLASHCARD QUESTION
Front
What interval contains approximately 99.7% of weights for a machine that pours concrete with a mean of 1150 pounds and standard deviation of 22 pounds?
Back
1084 to 1216 pounds
5.
FLASHCARD QUESTION
Front
What does the symbol 'σ' represent in statistics?
Back
Standard Deviation
6.
FLASHCARD QUESTION
Front
What percentage of data falls within 2 standard deviations of the mean according to the empirical rule?
Back
95%
7.
FLASHCARD QUESTION
Front
What percentage of data falls within 3 standard deviations of the mean according to the empirical rule?
Back
99.7%
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