Question

Consider the following data representing the daily calorie intake for dieters.

13801380, 10321032, 13181318, 10251025, 10211021, 12541254, 14181418, 14251425, 11911191, 10601060, 11701170, 14171417, 11901190, 12601260, 10541054, 13931393, 10651065, 13851385, 10671067, 12671267, 13461346

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Daily Calorie Intake for Dieters

Class	Frequency	Class Boundaries	Midpoint	Relative Frequency	Cumulative Frequency
1002–10811002–1081
1082–11611082–1161
1162–12411162–1241
1242–13211242–1321
1322–14011322–1401
1402–14811402–1481

Step 1 of 7: Determine the class width of the classes listed in the frequency table.

Step 2 of 7: Determine the frequency of the second class.

Step 3 of 7: Determine the lower class boundary for the third class.

Step 4 of 7: Determine the upper class boundary for the third class.

Step 5 of 7: Identify the midpoint of the fourth class.

Step 6 of 7: Calculate the relative frequency of the third class. Determine your answer as a simplified fraction.

Step 7 of 7: Compute the cumulative frequency of the sixth class.

Answer 1

class	frequency	class boundaries		midpoint	relative frequency	cumulative frequency
1002-1081	7	1001.5-1081.5		1041.5	1/3	7
1082-1161	0	1081.5-1061.5		1121.5	0	7
1162-1241	3	1161.5-1241.5		1201.5	1/7	10
1242-1321	4	1241.5-1321.5		1281.5	4/21	14
1322-1401	4	1321.5-1401.5		1361.5	4/21	18
1402-1481	3	1401.5-1481.5		1441.5	1/7	21

from above given data:

Step 1 of 7: class width =80

Step 2 of 7: Determine the frequency of the second class =0

Step 3 of 7: Determine the lower class boundary for the third class =1161.5

Step 4 of 7: Determine the upper class boundary for the third class =1241.5

Step 5 of 7: Identify the midpoint of the fourth class =1281.5

Step 6 of 7: Calculate the relative frequency of the third class =3/21 =1/7

Step 7 of 7: Compute the cumulative frequency of the sixth class =18