Quartile (Grouped Data)

The table shows the Daily wages of 40 workers. In the first quartile, compute for the cumulative frequency such as cN/4.

• 8

• 10

• 20

• 40

From the table, what class interval corresponds to the cumulative frequency equal to 10?

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What is the size of the class interval?

How much daily wages do the 25% (Q1) workers have? (your answer must be a whole number)

The table shows the Daily wages of 40 workers. In the second quartile, compute for the cumulative frequency such as cN/4.

• 8

• 10

• 20

• 40

From the table, what is the class interval corresponds to the cumulative frequency equal to 20?

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How much daily wages do the 50% (Q2) workers have? (your answer must be a whole number)

The table shows the Daily wages of 40 workers. In the third quartile, compute for the cumulative frequency such as cN/4.

• 8

• 10

• 30

• 40

From the table, what class interval corresponds to the cumulative frequency equal to 30?

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How much daily wages do the 75% (Q3) workers have? (your answer must be a whole number)