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Middle/High School Algebra, Geometry, and Statistics (AGS)9.10 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 - 50.40.54747.546 Q 2: Write the lower limit of the first class interval.60153510 Q 3: Determine the class size.105,10515 Q 4: Determine the class limits of the fourth class interval.15 - 2030 - 3540 - 4545 - 50 Q 5: The cumulative frequency and the frequency for the first class is the sametruefalse Question 6: This question is available to subscribers only! Question 7: This question is available to subscribers only!