Question
Find out the mean deviation from arithmetic mean from the given data.
| Class lnterval: | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 |
| Frecquency: | 2 | 4 | 6 | 4 | 2 |
| Class lnterval: | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 |
| Frecquency: | 2 | 4 | 6 | 4 | 2 |
| Class lnterval | Frequency (f) | Mid value (m) | fm | $|\text{D}|=|\text{m}-\bar{\text{X}}|\bar{\text{X}}=25$ | $\text{f|D}|$ |
| 0-10 | 2 | 5 | 10 | 20 | 40 |
| 10-20 | 4 | 15 | 60 | 10 | 40 |
| 20-30 | 6 | 25 | 150 | 0 | 0 |
| 30-40 | 4 | 35 | 140 | 10 | 40 |
| 40-50 | 2 | 45 | 90 | 20 | 40 |
| $\sum\text{f}=18$ | $\sum\text{fm}=450$ | $\sum\text{f|D|}=160$ |
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| Item | Weight | Prices in 2017 | Prices in 2018 |
| A | 10 | 100 | 161 |
| B | 7 | 200 | 210 |
| C | 15 | 50 | 60 |
| D | 9 | 20 | 30 |
| E | 10 | 10 | 14 |
| Income: | 100 | 200 | 400 | 500 | 800 |
| No. of Persons: | 80 | 70 | 50 | 30 | 20 |
|
Workers
|
A
|
B
|
C
|
D
|
E
|
F
|
G
|
H
|
I
|
J
|
|
Daily Income (in ₹)
|
120
|
150
|
180
|
200
|
250
|
300
|
220
|
350
|
370
|
260
|
|
Profit per retail shop (in ₹)
|
0-10
|
10-20
|
20-30
|
30-40
|
40-50
|
50-60
|
|
Number of retail shops
|
12
|
18
|
27
|
-
|
17
|
6
|
|
Marks
|
0-10
|
10-20
|
20-30
|
30-40
|
40-50
|
|
No. of Students
|
8
|
18
|
15
|
22
|
14
|
| Price (₹) | Quantity Demanded by Isla (Units) | Quantity Demanded by Ifraah(Units) | Quantity Demanded by Ila (Units) | Quantity Demanded by Ibema (Units) |
| 1 | 16 | 7 | 15 | 8 |
| 2 | 11 | 6 | 12 | 6 |
| 3 | 7 | 5 | 9 | 4 |
| 4 | 4 | 4 | 6 | 2 |
| 5 | 2 | 3 | 3 | 0 |
| 6 | 1 | 2 | 0 | 0 |
| Units of Labour | Average Product (A) (units) | Marginal Product (Units) |
| 1 | 8 | - |
| 2 | 10 | - |
| 3 | - | 10 |
| 4 | 9 | - |
| 5 | - | 4 |
| 6 | 7 | - |