No. of trees
26
57
35. The following table gives the height of the trees,
Height of the tree
Less than 7
Less than 14
less than 21
Less than 28
Less than 35
Less than 42
Less than 49
Less than 56
Find the mean and median
92
134
216
287
341
360
is this book sum
Answers
Consider the following table.
Height (less than)
Height-class
No. of trees
Cumulative frequency
Suitable points
7
0-7
26
26
(7,26)
14
7-14
31
57
(14,57)
21
14-21
35
92
(21,92)
28
21-28
42
134
(28,134)
35
28-35
82
216
(35,216)
42
35-42
71
287
(42,287)
49
42-49
54
341
(49,314)
56
49-56
19
360
(56,360)
Now draw the less than ogive using suitable points.
Now prepare the table for cumulative frequency table for more than series
Height (more than)
Height-class
No. of trees
Cumulative frequency
Suitable points
0
0-7
26
360
(0,360)
7
7-14
31
334
(7,334)
14
14-21
35
303
(14,303)
21
21-28
42
268
(21,268)
28
28-35
82
226
(28,226)
35
35-42
71
144
(35,144)
42
42-49
54
73
(42,73)
49
49-56
19
54
(49,54)
hope this helps you
Answer:
to the circle at E, then find the length of AB.
56
360
1
49
341
287
42
216
134
35
28
92
57
Find the median.
21
26
14
36. The following table gives the height of trees
Number of trees
7
Height (less than)