Statistic Quiz
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Medium
Barbara White
Used 3+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At a large company, the majority of the employees earn from $20,000 to $30,000 per year. Middle management employees earn between $30,000 and $50,000 per year while top management earn between $50,000 and $100,000 per year.
A histogram of all salaries would have which of the
following shapes?
Symmetrical
Uniform
Skewed to the right
Skewed to the left
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The average polar bear weighs 1200 lbs with a standard deviation of 100 lbs. 95% of bears are within what range of weights?
1100 lbs to 1300 lbs
1000 lbs to 1400 lbs
900 lbs to 1500 lbs
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A polar bear is in the 34th percentile for weight. What does that mean?
His z score for weight is z = .34
He is 34% of the average weight of 1200 lbs or 408 lbs.
He is 34% above average weight or 1200 lbs or 1608 lbs.
He is larger than 34% of the other polar bears.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What percent of all the data is between 50 and 70?
25%
33%
40%
50%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is NOT a correct formula?
upper outlier > Q3 + 1.5(Q3 - Q1)
lower outlier > Q3 - 1.5(Q3 - Q1)
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
All of the below sets have the same mean.
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
This data is normally distributed. What percent of the data is in the shaded region?
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