Calculate all the measures of variation

Calculate all the measures of variation

Class Interval

Frequency

20-30

30-40

40-50

50-60

60-70

18

35

65

32

10


Class interval

Frequency

(f)

Mid class value

(x)

xf

Less than cumulative frequency


;

l;

jhg

tf

hjk

hg

20-30

30-40

40-50

50-60

60-70

18

35

65

32

10

25

35

45

55

65

450

1225

2925

1760

650

18

53

118

150

160

18.8125

8.8125

1.1875

11.1875

21.1875

338.6250

308.4375

77.1875

358.0000

211.8750

19.1538

9.1538

20

10.8462

20.8462

344.7684

320.3830

1300

347.0784

208.4620

353.9101

77.6601

449.4

125.1601

448.9101

6370.3818

2718.1035

29211

4005.1232

4489.1010

Total

N=160

--

7010

----

----

1294.1250

-----

1275.6948

-----

17674.3660

hj
Last modified: Wednesday, 22 August 2012, 6:27 AM