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Unformatted text preview: down the marginal distribution of X and Y.
63 S.No. Height Weight
S.No.
Height
Weight
1
70
170
11
70
163
2
65
135
12
67
139
3
65
136
13
63
122
4
64
137
14
68
134
5
69
148
15
67
140
6
63
121
16
69
132
7
65
117
17
65
120
8
70
128
18
68
148
9
71
143
19
67
129
10
62
129
20
67
152
Solution:
Bivariate frequency table showing height and weight of persons.
6
6
6
6
7
T
Height(x)
6264 6466 6668 6870 7072 Total
Weight(y)
4
115125 II (2) II (2)
5
125135 I (1)
I (1) II (2) I (1)
135145
III (3) II (2)
I (1)
6
145155
I (1) II (2)
3
155165
I (1)
1
165175
I (1)
1
Total
3
5
4
4
4
20
The marginal distribution of height and weight are given in
the following table.
Marginal distribution of
Marginal distribution
height (X)
of (Y)
CI
Frequency
CI
Frequency
6264
3
115125
4
6466
5
125135
5
6668
4
135145
6
6870
4
145155
3
7072
4
155165
1
Total
20
165175
1
Total
20
64 Exercise  4
I. Choose the best answer:
1. In an exclusive class interval
(a) the upper class limit is exclusive.
(b) the lower class limit is exclusive.
(c) the lower and upper class limits are exclusive.
(d) none of the above.
2. If the lower and upper limits of a class are 10 and 40
respectively, the mid points of the class is
(a) 15.0
(b) 12.5
(c) 25.0 (d) 30.0
3. Class intervals of the type 3039,4049,5059 represents
(a) inclusive type
(b) exclusive type
(c) openend type
(d) none.
4. The class interval of the continuous grouped data is
1019
2029
3039
4049
5059
(a) 9
(b)10
(c) 14.5
(d) 4.5
5. Raw data means
(a) primary data
(b) secondary data
(c) data collected for investigation (d)Well classified data.
II. Fill in the blanks:
6. H.A.Sturges formula for finding number of classes is
________.
7. If the midvalue of a class interval is 20 and the difference
between two consecutive midvalues is 10 the class limits
are ________ and ________.
8. The difference between the upper and lower limit of class is
called ______.
9. The average of the upper and lower limits of a class is
known as _________.
10. Number of observations falling within a particular cl...
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This note was uploaded on 01/18/2014 for the course BUS 100 taught by Professor Moshiri during the Winter '08 term at UC Riverside.
 Winter '08
 Moshiri
 Business

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