Case Study Based- 4
100m RACE A stopwatch was used to find the time that it took a group of students to run 100 m.

The sum of lower limits of median class and modal class is
(i)60
(ii)100
(iii)80
(iv)140

Case Study Based- 4 100m RACE A stopwatch was used to find the time that it took a group of students to run 100 m. What will be the upper limit of the modal class?

Case Study Based- 4 100m RACE A stopwatch was used to find the time that it took a group of students to run 100 m. How many students finished the race within 1 minute?

Case Study Based- 4 100m RACE A stopwatch was used to find the time that it took a group of students to run 100 m. The construction of cumulative frequency table is useful in determining the

Case Study Based- 4 100m RACE A stopwatch was used to find the time that it took a group of students to run 100 m. Estimate the mean time taken by a student to finish the race. (i)54 (ii)63 (iii)43 (iv)50

Case Study Based- 4 100m RACE A stopwatch was used to find the time that it took a group of students to run 100 m. How many students finished the race within 1 minute? (i)18 (ii)37 (iii)31 (iv)8

What wiil be the upper limit of the modal class ? (i)20 (ii)40 (iii)60 (iv)80

100 surnames were randomly picked up from a local telephone directory and the frequency distribution of the number of letters in the English alphabets in the surnames was obtained as follows: Sum of lower limit of median and modal class is:

A dice is thrown 100 times and the outcomes are noted as given below.When a dice is thrown at random, what is the probability of getting aQ(i) 3 (ii) 6 (iii) 4 (iv) 1

Observe the following frequency polygon and write the answers of the questions below it. i . Which class has the maximum number of students? ii . Write the classes having zero frequency. iii . What is the class mark of the class, having frequency of 50 students ? iv . Write the lower and upper class limits of the class whose class mark is 85 . v . How many students are in the class 80-90 ?