1. Introductory Statistics: Exploring the World through Data, 1e
Active Learning Lecture Slides
For use with Classroom Response Systems
Introductory Statistics:
Exploring the World through Data, 1e
by Gould and Ryan
Quiz on 3.4 & 4.5
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2. © 2013 Pearson Education, Inc.
True or False The median cuts a distribution down the middle, so about 50% of the observations are below it and about 50% are above it.
True
False
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3. © 2013 Pearson Education, Inc.
True or False In a symmetric distribution, the mean and median are approximately the same..
True
False
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4. © 2013 Pearson Education, Inc.
True or False In a right skewed distribution, the median tends to be greater than the mean.
True
False
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5. A right-skewed distribution has
A tail that goes to the right
A tail that goes to the left
One mode
A bell-shape
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6. A distribution that has a tail that goes to the left is called
Right-skewed.
Bimodal.
Left-skewed.
Symmetric.
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7. A symmetric distribution that has one mound is often referred to as a
Right-skewed distribution.
A bell-shaped distribution.
Left-skewed distribution.
A Bimodal distribution.
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8. A distribution that has one mound is called a
Multimodal distribution.
Unimodal distribution.
Left-skewed distribution.
A Bimodal distribution.
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9. A bimodal distribution has
One mound.
Two mounds.
More than two mounds.
Is symmetric.
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10. An extremely large or extremely small observation is called
A mean.
A mode.
An outlier.
A median.
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11. © 2013 Pearson Education, Inc.
An outlier
is a value so large or small that they it does not fit the data.
has no precise definition.
can be caused by mistakes in data entry.
All of the above.
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12. © 2013 Pearson Education, Inc.
True or False Two commonly used graphs to display the distribution of a sample of categorical data are bar charts and pie charts.
True
False
© 2013 Pearson Education, Inc.