Cumulative Relative Frequency Table and Chart

What is an ogive graph?

• Cumulative Frequency Graph

• Frequency Graph

• Relative Frequency Graph

• A pie chart

What is the cumulative frequency of the 3rd class in this distribution?

• 1

• 14

• 15

• 24

Find the cumulative frequencies.

• 28, 56, 84, 100

• 28, 58, 70, 72, 74, 76

• 33%, 37%, 20%, 7%, 7%, 7%

• 28, 30, 12, 2, 2, 2

What is another name for the ogive?

• Histogram

• Frequency Polygon

• Cumulative frequency graph

• Pareto chart

A cumulative relative frequency distribution shows

• the proportion of data items with values less than or equal to the upper limit of each class

• the proportion of data items with values less than or equal to the lower limit of each class.

• the percentage of data items with values less than or equal to the upper limit of each class

• the percentage of data items with values less than or equal to the lower limit of each class

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.

At right is a cumulative relative frequency graph for the 48 racers who finished the grueling 50km cross-country ski race at the 2014 Sochi Olympics. Approximately what proportion of the racers finished the race in MORE than 2.15 hours?

• 1.34

• 0.45

• 0.238

• 0.54

P(x ≥ 5) = _____

Find the relative frequencies

• 37%, 76%, 92%, 95%, 98%, 100%

• 28%, 30%, 12%, 2%, 2%, 2%

• 33%, 37%, 20%, 7%, 7%, 7%

• 37%, 39%, 16%, 3%, 3%, 3%

What would be the cumulative frequency for the third class?

• 5

• 12

• 17

• 18