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Questions Per Quiz = 2 4 6 8 10

### High School Mathematics14.10 Cumulative Frequency

For a particular year, following is the distribution on ages (in years) of the income tax department officers in a district:

 Age (in years) 15 - 20 20 - 25 25 - 30 30 - 35 35 - 40 40 - 45 45 - 50 No. of teachers 10 30 50 50 30 6 4

Directions: On the basis of the given information answer the following questions. Also write at least one example of your own.
 Q 1: Find the class mark of the class 45 - 50.47.5474640.5 Q 2: Write the lower limit of the first class interval.35601510 Q 3: Determine the class limits of the fourth class interval.40 - 4530 - 3515 - 2045 - 50 Q 4: Write down the cumulative frequency up to the fourth class interval.90170140180 Q 5: Write the lower limit of the seventh class interval.25354514 Question 6: This question is available to subscribers only! Question 7: This question is available to subscribers only!