AP Stat Unit 6

Describe the shape of the distribution.
 

• Skewed Left

• Skewed Right

• Uniform

• Normal

Describe the shape of the distribution.
 

• Skewed Left

• Skewed Right

• Symmetric

• Uniform

Type of Data arrangement

• Symmetrical

• Hairline

• Skewed Right

• Skewed Left

Which of the following best describes the shape of the distribution?

• SKEWED LEFT

• SKEWED RIGHT

• SYMMETRICAL

This distribution is ​ (a)   so we should use the ​ (b)   as a measure of center and the ​ (c)   as a measure of variability.

• right skewed

• median

• IQR

• fairly symmetric

• left skewed

• mean

• standard deviation

• range

• mode

This distribution is ​ (a)   so we should use the ​ (b)   as a measure of center and the ​ (c)   as a measure of variability.

• fairly symmetric

• mean

• range

• left skewed

• mode

• median

• IQR

• right skewed

The founder of Walmart is interested to know the average amount of money the stores lose in returned or damaged merchandise. They randomly pick two stores in each state and calculate the amount of money each store lost. Which best describes the sampling method used

• SRS

• Stratified random sample

• Cluster sample

• Systematic Sample

The IQR in 2nd period is greater than the IQR in 1st

period.

• TRUE

• FALSE

Describe the shape

• roughly symmetric

• skew left

• skew right

• uniform

Independently selected groups of middle-school children were given a poem to memorize. After a certain period of time, they were asked to recall as much of the poem as they could. A back-to-back stem plot of the distribution of the number of words that each group of children could correctly remember is displayed above. Which of the following statements about these data is true?

• There are more students in Group 1 than in Group 2.

• The third quartile of the Group 1 distribution is larger than the maximum value of the Group 2 distribution (that is, 25% of the Group 1 values are larger than any Group 2 value).

• The median of the Group 2 distribution is smaller than the first quartile of the Group 1 distribution (that is, 50% of the Group 2 values are smaller than at least 75% of Group 1 values).

• The mean number of words remembered for Group 1 is smaller than the mean number of words remember for Group 2.