CIA 5 Review

According to the histograms below, how many more females sent 85 or more Instagram messages per day than males?

What is the difference between the medians of New York and Seattle?

• 4

• 2

• 6

• 8

What two numbers are used to find the range and what is the range?

Min:  17

Q1:  26

Q2:  31

Q3:  37

Max:  48

• The two numbers used to find the range are the minimum (17) and the maximum (48). The range is 48 - 17 = 31.

• The two numbers used to find the range are the minimum (26) and the maximum (37). The range is 37 - 26 = 11.

• The two numbers used to find the range are the minimum (17) and the maximum (37). The range is 37 - 17 = 20.

• The two numbers used to find the range are the minimum (20) and the maximum (50). The range is 50 - 20 = 30.

Here are the numbers that make up the five-number summary. Min: 17 Q1: 26 Q2: 31 Q3: 37 Max: 48 What two numbers are used to find the interquartile range and what is the interquartile range (IQR)?

• The two numbers used to find the interquartile range are Max (48) and Min (17). The interquartile range (IQR) is 48 - 17 = 31.

• The two numbers used to find the interquartile range are Q2 (31) and Q1 (26). The interquartile range (IQR) is 31 - 26 = 5.

• The two numbers used to find the interquartile range are Q3 (37) and Q1 (26). The interquartile range (IQR) is 37 - 26 = 11.

• The two numbers used to find the interquartile range are Q3 (37) and Q2 (31). The interquartile range (IQR) is 37 - 31 = 6.

What are the 3 measures of central tendency (aka measures of center)?

• Maximum, Minimum, and Range.

• Range, Variance, and Standard Deviation.

• Sum, Product, and Quotient.

• Mean, Median, and Mode.

What are the 3 measures of variability (aka measures of spread)?

• Range, Variability, Standard Deviation

• Mean, Median, Mode

• Percentile, Quartile, Decile

• Skewness, Kurtosis, Mode

Compare the range for data sets A and B using the line plot. Which data set has a greater range? (x = 1 student)

• Data set A has a greater range.

• Data set B has a greater range.

• Both have the same range.

• Cannot be determined from the plot.

The lengths, in seconds, of 8 folk songs are 128, 165, 141, 162, 166, 137, 132, & 145. What is the median length, in seconds, of the folk songs?

• 143 seconds

• 148 seconds

• 137 seconds

• 162 seconds

The lengths, in seconds, of 8 pop songs are 90, 98, 102, 94, 105, 109, 103, & 100. What is the median length, in seconds, of the pop songs?

• 100 seconds

• 101 seconds

• 102 seconds

• 98.5 seconds

The lengths, in seconds, of 8 folk songs are 128, 165, 141, 162, 166, 137, 132, & 145. The lengths, in seconds, of 8 pop songs are 90, 98, 102, 94, 105, 109, 103, & 100. What do you notice about the medians?

• The medians of both sets are equal.

• The median of the folk songs is greater than the median of the pop songs.

• The median of the pop songs is greater than the median of the folk songs.

• Both sets have the same range.