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- 1. Multiple ChoiceWhat shape is a normal distribution curve?Half curveRound curveBell curveSquare curve
- 2. Multiple Choice
The area of this region (+/- 1 standard deviation) is closest to...
16%
84%
68%
34%
- 3. 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
- 4. Multiple Choice
Standard Deviation means how much the data deviates from the mean, or how SPREAD out it is. Which curve has the greater standard deviation?
Red
Black
Blue
- 5. Multiple ChoiceWhat does this symbol represent?Standard DeviationVarianceMean Absolute DeviationSigma
- 6. Multiple ChoiceWhat does this picture represent?ModeModelModelaMatel
- 7. Multiple ChoiceRangeHomeOnThe
- 8. Multiple ChoiceFind the mean of:
2.1, 7, 3, 4.9,133.33.63.9 - 9. Multiple ChoiceThe normal curve is symmetrical about the mean.TrueFalse
- 10. Multiple ChoiceThe mean life of a tire is 30,000 km. The standard deviation is 2000 km.
Then, 68% of all tires will have a life between ___________ km and __________ km.28,000 km and 32,000 km.24,000 km and 34,000 km.26,000 km and 34,000 km.27,000 km and 31,000 km. - 11. Multiple Choice
The histogram is not normal. The distribution is ____.
Bimodal
Skewed right
Skewed left
Multimodal
- 12. Multiple Choice
When the median is more than the mean this results in a negative (left) skew
true
false
- 13. Multiple ChoiceShape?Skewed rightSkewed leftSymmetricUnimodal
- 14. Multiple Choice
This data is skewed right. What is the best approximation for the mean?
7
8.5
12
- 15. Multiple ChoiceAll 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?1234 - Answer choicesTagsAnswer choicesTags