tadicsics
Mean'
Disaet Mathod
2 suntd Moan Mthed I = a + 2id
s t e p daviakign method T = ath uui
ui -di = Ti-
h h
Enanpla Marks ohtainnd Ne. oStuderts
10
20 20
3 10?
36
160
S0 150
56 2 112
60 2 40
2 80
2 42
80
80
, 2
3
46
3.2 216
95 95
2i=30
T a t a l
ul= 19
."I1AS=
30
53.3
T a n maxks is 53.3
Usingiact Mahod
Cass Tnteval
Studan's Mas
(x)
10 25 2 4.5 35.0
25 40 32.5 375
4o 55 42 5 332.5
55-40 G2.5 315.5
435 465 0
H0-85 555. 0
85-100 6 32.5
230 21800
Ehxi= 1860 62
30
+ lar uns
CassMark UpptUppe Cass imit
2
, Usina dssumc Moan Mthod
Closs Jdeowa Class di-
Stadanks y Mak . d
(x)
(o-25 2 -30
25-40 3 32. 5 -15
5
40-55 + 4.5
55-40 62-5 15
H 85 45 30 80
85-100 25 45 270
Total -30 2id-135
ww, a =44. 5
di - a = deviation
a +a+d
= a+
udi
. T= 17.5 + 435 = 4 5 4 14.5 62
30
JUsng stp-doiatian Mothod
u i-9 daviakox
lass Itowa
h oss indowal = Pp Umit-lawennt
Mean'
Disaet Mathod
2 suntd Moan Mthed I = a + 2id
s t e p daviakign method T = ath uui
ui -di = Ti-
h h
Enanpla Marks ohtainnd Ne. oStuderts
10
20 20
3 10?
36
160
S0 150
56 2 112
60 2 40
2 80
2 42
80
80
, 2
3
46
3.2 216
95 95
2i=30
T a t a l
ul= 19
."I1AS=
30
53.3
T a n maxks is 53.3
Usingiact Mahod
Cass Tnteval
Studan's Mas
(x)
10 25 2 4.5 35.0
25 40 32.5 375
4o 55 42 5 332.5
55-40 G2.5 315.5
435 465 0
H0-85 555. 0
85-100 6 32.5
230 21800
Ehxi= 1860 62
30
+ lar uns
CassMark UpptUppe Cass imit
2
, Usina dssumc Moan Mthod
Closs Jdeowa Class di-
Stadanks y Mak . d
(x)
(o-25 2 -30
25-40 3 32. 5 -15
5
40-55 + 4.5
55-40 62-5 15
H 85 45 30 80
85-100 25 45 270
Total -30 2id-135
ww, a =44. 5
di - a = deviation
a +a+d
= a+
udi
. T= 17.5 + 435 = 4 5 4 14.5 62
30
JUsng stp-doiatian Mothod
u i-9 daviakox
lass Itowa
h oss indowal = Pp Umit-lawennt
