One Variable Statistics

The simplest measure of variability is...

• range

• standard deviation

• IQR

• mean

Tags

CCSS.6.SP.A.3

The standard deviation should be interpreted as the typical distance of the values in a distribution from the mean.

• True

• False

Tags

CCSS.HSS.ID.A.3

For a skewed distribution or a distribution with outliers, use the median to describe center and the ____ to describe variability.

Tags

CCSS.HSS.ID.A.2

CCSS.6.SP.B.5D

Which of the following choices give two measures that are both resistant to outliers?

• The mean and standard deviation.

• The median and standard deviation.

• The median and the IQR.

• The range and the IQR.

Tags

CCSS.HSS.ID.A.2

CCSS.6.SP.B.5D

Without doing any calculations, which of the distributions shown (A, B, or C) has the largest standard deviation?

• Distribution A

• Distribution B

• Distribution C

• The standard deviations are equal because the ranges are equal.

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

Pick the definition of an outlier.

• A value that lies outside of most other values in a data set.

• A value that is the largest.

• A value that is the smallest.

• A value that occurs the most.

Tags

CCSS.HSS.ID.A.3

If outliers are removed, what changes more significantly the mean or median?

• Mean

• Median

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

If outliers are removed, what changes more significantly the standard deviation or interquartile range (IQR)?

• Standard Deviation

• Interquartile Range (IQR)

Tags

CCSS.HSS.ID.A.3

True or False: the mean and median values of shoe sizes shown in the dot plot for Group B are almost the same.

• True

• False

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.1

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?

• 1
• 2
• 3
• 4

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3