Prob & Stats Midterm Review

70 college students were asked what their favorite year of high school was. The data collected was compiled into this frequency chart.

Interpret the meaning of the number 17 on the chart.

• The students asked replied they were 17 during their favorite year.

• 17 sophomores were asked what their favorite year was.

• 17 respondents said their favorite year was their sophomore year.

• The average sophomore is 17 years old.

Tags

CCSS.7.SP.A.1

A class of students was asked how many hours each of them spent on homework this week. The data was used to make this dot plot.

Describe the shape of this distribution.

• Symmetric

• Skewed to the right

• Skewed to the left

• Skewed in the center

Tags

CCSS.HSS.ID.A.1

CCSS.HSS.ID.A.3

What is the BEST option for displaying relative frequencies of categorical data.

• Dot Plot

• Histogram

• Bins

• Pie Chart

Tags

CCSS.HSS.ID.B.5

Favorite Ice Cream Flavor is an example of...

• An Individual

• A Quantitative Variable

• A Population

• A Categorical Variable

Tags

CCSS.HSS.ID.B.5

According to this pie chart, what percent of respondents prefer tigers or elephants?

• 43%

• 33%

• 40%

• 7%

Tags

CCSS.HSS.ID.A.1

Identify the First Quartile, Third Quartile, and the Interquartile Range of the following distribution.

• Q1=31.5 ; Q3=41; IQR=13

• Q1=30 ; Q3=43 ; IQR=13

• Q1=31.5 ; Q3=41; IQR=9.5

• Q1=30 ; Q3=43; IQR=9.5

Tags

CCSS.HSS.ID.A.1

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

Is 28 an outlier in the following data set?

8, 9.5, 13.5, 14, 14, 16, 28

• Yes, because anything greater than 22.5 is an outlier

• Yes, because anything greater than 25.75 is an outlier

• No, because it must be greater than 34.5 to be an outlier

• Yes, because anything greater than 19.25 is an outlier

Tags

CCSS.HSS.ID.A.3

Which of the following measures of variability is resistant?

• IQR

• mean

• standard deviation

• range

Calculate the mean of the following distribution:

5.5, 10.5, 12, 11.5, 19, 19.5, 20

Would the mean change if the data value 20 (the maximum) was replaced with 30?

• Mean: 14 ; Yes because the mean is not resistant to extreme values.

• Mean: 11.5 ; Yes because the mean is not resistant to extreme values.

• Mean: 11.5 ; No because the mean is resistant to extreme values.

• Mean: 14 ; No because the mean is resistant to extreme values.

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

Identify the First Quartile, Median, and Third Quartile of the following dataset:

31, 12, 15, 22, 9, 21, 34, 2

• Q1=9 ; Median=15 ; Q3=26.5

• Q1=10.5 ; Median=18 ; Q3=26.5

• Q1=10.5 ; Median=21 ; Q3=31

• Q1=9 ; Median=18 ; Q3=31

Tags

CCSS.HSS.ID.A.2