Relative Frequency Distributions

What is the relative frequency of the first class?

• 0.139 or 13.9%

• 0.5 or 5%

• 1-5

• 5

Observe the frequency distribution:

Estimate the relative frequency of the fourth class.

• 69

• 5.3

• 0.189 or 18.9%

• 0.54 or 54%

Observe the histogram and choose the frequency distribution that corresponds to it.

• 
• 

Identify the class with the least relative frequency.

• 115 - 125

• 125 - 135

• 135 - 145

• 145 - 155

Except for rounding errors, relative frequencies should add up to what sum?

• 0

• 1

• 50

• 100

Use the ogive to approximate the number in the sample.

• 100

• 28

• 80

• 341

Identify the class with the highest relative frequency.

• 95 - 105

• 105 - 115

• 115 - 125

• 125 - 135

Approximate the greatest relative frequency.

• 0.03

• 0.15

• 0.25

• 0.35

Approximate the least relative frequency.

• 0.03

• 0.15

• 0.25

• 0.35

What is the difference between relative frequency and cumulative frequency?

• Relative frequency of a class is the proportion of the data in that class, while cumulative frequency of a class is the number of observations in that class.

• Relative frequency of a class is the percentage of the data that falls in that class, while cumulative frequency of a class is the sum of the frequencies of that class and all previous classes.

• Relative frequency of a class is the number of observations in that class, while cumulative frequency of a class is the sum of all the frequencies.

• There is no difference between the two.