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Mathematics
7th -
10thgrade
Normal Distribution Bell Curve and 2 way table Quiz
18 questions
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- 1. Multiple ChoiceWhat shape is a normal distribution curve?Half curveRound curveBell curveSquare curve
- 2. Multiple Choice
Find the area of the shaded region.
16%
84%
68%
34%
- 3. Multiple Choice
Find the area of the shaded region.
16%
84%
68%
34%
- 4. Multiple Choice
What percent of a normal distribution lies outside of ±3 standard deviations?
99.7%
.15%
.3%
100%
- 5. Multiple Choice
Where can we locate the mean in the normal curve?
to the left portion
to the right portion
at the center
on the z - axis
- 6. Multiple Choice
Adam's standard deviation on a test is +2.5. What does this mean?
He'd better start studying.
He did better than EVERYONE.
He scored 2.5 standard deviations above the average.
He did terrible.
- 7. Multiple ChoiceThis data is normally distributed. What percent of the data is in the shaded region?68%95%99.7%50%
- 8. Multiple ChoiceThis data is normally distributed. What percent of the data is in the shaded region?68%95%99.7%50%
- 9. Multiple ChoiceScores on a certain standardized test have a mean of 500, and a standard deviation of 100. How common is a score between 600 and 700? Calculate the probability.2.5%2.35%16%13.5%
- 10. Multiple ChoiceThe scoring of modern IQ is such that Intelligence Quotients (IQs) have a normal distribution of μ= 100 and 𝞂 = 15.
Mensa International is a non-profit organization that accepts only people with IQ score within the top 2%. What level of IQ qualifies one to be a member of Mensa?115130.75145120 - 11. Multiple ChoiceWhat does this symbol represent?MeanMedianModeStandard Deviation
- 12. Multiple ChoiceWhat does this symbol represent?Standard DeviationVarianceMean Absolute DeviationSigma
- 13. Multiple Choice
Which curve has the greater standard deviation?RedBlackBlue - 14. Multiple Choice
35 children were asked if they prefer cats or dogs. The data is shown in the table. How many girls prefer dogs?
Don't have enough information
2
23
29
- 15. Multiple Choice
The table shows incomplete info about customers' orders in a cafe. How many women visited the cafe in total?
37
15
22
12
- 16. Multiple ChoiceWhat percentage of males drive sports cars?35%16.25%65%25%
- 17. Multiple ChoiceHow many students were surveyed in the "Biking to School" two-way table?16141130
- 18. Multiple ChoiceWhat is the relative frequency (to the nearest percent) of boys among those who cannot bike to school?4%14%13%29%
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