
Standard Deviation and Percents
Authored by Anthony Clark
Mathematics
12th Grade
CCSS covered

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14 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
95% of the data lies within:
3 Standard Deviations of the Mean
2 Standard Deviations of the Mean
1 Standard Deviation of the Mean
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
99.7% of the data lies within:
3 Standard Deviations of the Mean
2 Standard Deviations of the Mean
1 Standard Deviation of the Mean
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
81.5%
68%
95%
84%
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use the following information and the Empirical Rule to estimate the answer.
The ages of golfers are normally distributed, with a mean of 38 and a standard deviation of 4.
Find the percentage of golfers that are between 30 and 46 years old.
68%
94%
95%
99.7%
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use the following information and the Empirical Rule to estimate the answer.
The ages of golfers are normally distributed, with a mean of 38 and a standard deviation of 4.
There are 500 golf members at the Mathy Country Club. How many are younger than 34?
16
80
100
150
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The mean GPA of students in a course at UCDavis is 3.2 with a standard deviation of 0.3. What percent of students in the course have a GPA between 2.9 and 3.8?
81.5%
47.5%
68%
95%
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Given a mean of 75 and a standard deviation of 7, how many students out of 500 would score between 68 and 82
11
2
340
498
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