Question

Identify the lower class limits, upper class limits, class width, class midpoints, and class boundaries for theaward was won given frequency distribution. Also identify the number of individuals included in the summary .

Identify the number of individuals included in the summary.

Answer 1

Class limits:

for the class 20 - 23 are: LCL =20 and UCL =23

for the class 24 - 27 are: LCL =24 and UCL =27

for the class 28 - 31 are: LCL =28 and UCL =31 and similar for other classes, if any.

Class width =24 - 20 =4

Class mid points:

for the class 20 - 23 is (23+20)/2 =21.5

for the class 24 - 27 is (24+27)/2 =25.5

for the class 28 - 31 is (28+31)/2 =29.5 and similarly calculated for other classes, if any.

Class Boundaries are:

19.5 - 23.5

23.5 - 27.5

27.5 - 31.5 and similar for other classes, if any.

The number of individuals included in the summary are 31+34+14 =79 (for the given 3 classes).