For any given data set, the median must be greater than or equal to the lower quartile, and less ...

For any given data set, the median must be greater than or equal to the lower quartile, and less than or equal to the upper quartile.
1.True
2.False

Q. 2

The variance is the positive square root of the standard deviation.
1.True
2.False

Q. 3

One disadvantage of using the mean as a measure of center for a data set is that its value is affected by the presence of even a single outlier in the data set.
1.True
2.False

Q. 4

The mean is the middle value of an ordered data set.
1.True
2.False

Q. 5

Which variable would most likely have a left-skewed distribution?
1.age of college student at local community college
2.heights of college students
3.grades on a very difficult statistics exam
4.age at which death occurs

Q. 6

If a random sample of 100 pennies is taken and a histogram constructed with age on the x-axis and frequency on the y-axis, the shape of the histogram would most likely have which shape?
1.symmetric
2.right-skewed
3.left-skewed
4.uniform

Q. 7

Which is not used to display quantitative data?
1.stem-and-leaf displays
2.bar graphs
3.dot plots
4.back-to-back stem-and-leaf displays

Q. 8

Which is not used to display qualitative data?
1.Pareto diagrams
2.circle graphs
3.stem-and-leaf displays
4.bar graphs

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For any given data set, the median must be greater than or equal to the lower quartile, and less ...

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