Identify the class width class midpoints and class boundarie

Identify the class width, class midpoints, and class boundaries for the given frequency distribution.

Daily Low Temp (F)    Frequency                     Daily Low Temp (F)      Frequency

        32-36                         1                                             52-56                         7

        37-41                         3                                             57-61                         7

        42-46                         5                                             62-66                         1

        47-51                        11                                           

What is the class width? (type an integer or a decimal)

What are the class midpoints? (Use ascending order. Type integers or decimals.)

What are the class boundaries? (Use ascending order. Type integers or decimals.)

Solution

The class width is w=36-32=4

The class mid points are (32+36)/2=34, 39,44,49,54,59,64.

The class boundary is the gap used to separate the classes that is 37-36=1