Question

Consider the following data representing the price of plasma televisions (in dollars).

1162, 1221, 1204, 1356, 1252, 1240,1254, 1253, 1192, 1399, 1209, 1361,1319, 1233,1136,1275, 1371,1174, 1403,1181, 1407

Class	Frequency	Class Boundaries	Midpoint	Relative Frequency	Cumulative Frequency
1126–1175	3	1125.5-1175.5	1150.5	0.1428	3
1176–1225	5	1175.5-1225.5	1200.5	0.2381	8
1226–1275	6	1225.5-1275.5	1250.5	0.2857	14
1276–1325	1	1275.5-1325.5	1300.5	0.0476	`15
1326–1375	3	1325.5-1375.5	1350.5	0.1429	18
1376–1425	3	1375.5-1425.5	1400.5	0.1429	21

The class width of the classes listed in the frequency table: 50

The frequency for each class: 3,5,6,1,3,3

The lower class boundary each class: 1125.5, 1175.5,1225.5,1275.5,1325.5 & 1375.5

QUESTIONS:

1) Determine the upper-class boundary for the fifth class.

2) Identify the midpoint for all of the classes

3) Calculate the relative frequency for all of the classes. Determine your answer as a simplified fraction

4) Compute the cumulative frequency for all of the classes

Answer 1

Solution:

1) Determine the upper-class boundary for the fifth class.

Ans:1375.5

now

2) Identify the midpoint for all of the classes

3) Calculate the relative frequency for all of the classes. Determine your answer as a simplified fraction

4) Compute the cumulative frequency for all of the classes

Ans :

Class	Frequency	Class Boundaries	Midpoint	Relative Frequency	Cumulative Frequency
1126–1175	3	1125.5-1175.5	1150.5	0.1428	3
1176–1225	5	1175.5-1225.5	1200.5	0.2381	8
1226–1275	6	1225.5-1275.5	1250.5	0.2857	14
1276–1325	1	1275.5-1325.5	1300.5	0.0476	`15
1326–1375	3	1325.5-1375.5	1350.5	0.1429	18
1376–1425	3	1375.5-1425.5	1400.5	0.1429	21

Thank You..!!