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Multiple Select

WHAT IS CUMULATIVE FREQUENCY?

• Cumulative frequency is used to determine the number of observations that lie above (or below) a particular value in a data set.

• The cumulative frequency is calculated using a frequency distribution table, which can be constructed from stem and leaf plots or directly from the data.

• The cumulative frequency is calculated by adding each frequency from a frequency distribution table to the sum of its predecessors.

• The last value will always be equal to the total for all observations, since all frequencies will already have been added to the previous total.

Construct a CUMULATIVE FREQUENCY column

• What is the first frequency?

• Add all the frequencies starting from the first.

How to construct a cumulative frequency?

• Please copy the table.

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Find the MEDIAN CLASS?

• Divide n by 2.

• The median class is the class interval that is equal to n/2 found on cumulative frequency column.

• If there's no equal, take the number greater than n/2 on cumulative frequency column.

Formula in finding the median for grouped data.

• Please COPY!!!

Give the values of n/2, LBmc, Less than frequency and interval.

• Please copy.

The MEDIAN.

• COPY!!!

• COPY!!!