Elementary Statistics Study Material

ELEMENTARY STATISTICS

TABLE OF CONTENTS
Q1.....................................................................................................................................................1
(A)...............................................................................................................................................1
(1).......................................................................................................................................1
(2).......................................................................................................................................2
(3).......................................................................................................................................2
(4).......................................................................................................................................3
(b)................................................................................................................................................4
(1).......................................................................................................................................4
Q 2....................................................................................................................................................6
(A)...............................................................................................................................................6
(1).......................................................................................................................................6
Q3...................................................................................................................................................10
(A)....................................................................................................................................10
(B)....................................................................................................................................10
©......................................................................................................................................10
(D)....................................................................................................................................11
(E)....................................................................................................................................11
(F)....................................................................................................................................11
REFERENCES..............................................................................................................................12
Table 1Frequency and relative frequency........................................................................................1
Table 2Cumulative frequency table.................................................................................................2
Table 3Input to prepare Ogive chart................................................................................................3
Table 4Input table............................................................................................................................4
Table 5Mean calculation..................................................................................................................4
Table 6Standard deviation calculation.............................................................................................5
Table 7Average of weight...............................................................................................................6
Table 8Median of weight of bags....................................................................................................7

Table 9Mode of weight of bags.......................................................................................................8
Table 10Standard deviation of weight of bags................................................................................8
Figure 1Frequency chart..................................................................................................................2
Figure 2Cumulative frequency chart...............................................................................................3
Figure 3Loayalty test results..........................................................................................................10

Q1
(A)
(1)
Table 1: Frequency and relative frequency
Class-interval Count of age of 40 randomly selected Biz learners
Relative frequency =
Frequency / total
frequency
23-26 4 4 / 40 = .10
27-30 6 6 / 40 = .15
31-34 7 7 / 40 = .18
35-38 9 9 / 40 = .23
39-42 8 8 / 40 = .20
43-46 4 4 / 40 = .10
47-50 2 2 / 40 = .05
Grand Total 40 40 / 40 = 1
1