  Question

# The heights (in cm) of students of a class is tabulated below. HeightNumber of students150−1544155−1593160−1642165−1691170−1742175−1792180−1844185−1892Total20 Identify the correct option (s).The class distribution is discontinuous Number of students having height in range of 160-174 cm is 5 The data can not be changed into continuous class interval form The range of data is 40

Solution

## The correct options are A The class distribution is discontinuous B Number of students having height in range of 160-174 cm is 5 D The range of data is 40 In the given table, the upper limit of a class does not coincide with the lower limit of the succeeding class, so the class intervals are not continuous and option A is correct.  Also the number of students in the range of 160 cm -174 cm = 2+1+2 = 5. Hence, option B is correct. Also, any data having discontinuous class intervals can be converted into one with continuous class intervals. Hence, C is incorrect. Range of data = Total width of data = 189-150 = 39.  Suggest corrections   