Question

The following table gives the height of trees:
Height No.of trees
Less than 7 26
Less than 14 57
Less than 21 92
Less than 28 134
Less than 35 216
Less than 42 287
Less than 49 341
Less than 56 360
Draw ‘less than’ ogive and ‘more than’ ogive.

Answer 1

Step-by-step explanation:

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)

Now draw the more than ogive using suitable points.

solution