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Question
Do you agree that classified data is better than raw data? Why?
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Solution
The classified data has the following advantages over the raw data.
1. Comprehensive-Raw data are large and entangled, whereas classified data are comprehensive and easily manageable.
2. Quick Information- It is troublesome to pick up information from unclassified data. Information can be easily collected from the classified data.
3. Conclusions - Classification facilitates comparisons and helps in drawing fast conclusions or inferences.
4. Saves Time and Energy- Classified data not only save our time but also our energy, which would otherwise be utilised in searching for an entire lot of things.
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RELATED QUESTIONS
"The quick brown fox jumps over the lazy dog"
Examine the above sentence carefully and note the numbers of letters in each word. Treating the number of letters as a variable, prepare a frequency array for this data.
What is ‘loss of information’ in classified data?
Distinguish between univariate and bivariate frequency distribution.
Prepare a frequency distribution by inclusive method taking class interval of 7 from the following data:
|
28 |
17 |
15 |
22 |
29 |
21 |
23 |
27 |
18 |
12 |
7 |
2 |
9 |
4 |
|
1 |
8 |
3 |
10 |
5 |
20 |
16 |
12 |
8 |
4 |
33 |
27 |
21 |
15 |
|
3 |
36 |
27 |
18 |
9 |
2 |
4 |
6 |
32 |
31 |
29 |
18 |
14 |
13 |
|
15 |
11 |
9 |
7 |
1 |
5 |
37 |
32 |
28 |
26 |
24 |
20 |
19 |
25 |
|
19 |
20 |
6 |
9 |
Use the data in the Table below that relate to monthly household expenditure (in Rs) on the food of 50 households and
| 1904 | 1559 | 3473 | 1735 | 2760 |
| 2041 | 1612 | 1753 | 1855 | 4439 |
| 5090 | 1085 | 1823 | 2346 | 1523 |
| 1211 | 1360 | 1110 | 2152 | 1183 |
| 1218 | 1315 | 1105 | 2628 | 2712 |
| 4248 | 1812 | 1264 | 1183 | 1171 |
| 1007 | 1180 | 1953 | 1137 | 2048 |
| 2025 | 1583 | 1324 | 2621 | 3676 |
| 1397 | 1832 | 1962 | 2177 | 2575 |
| 1293 | 1365 | 1146 | 3222 | 1396 |
Monthly Household Expenditure (in Rupees) on Food of 50 Households
Divide the range into an appropriate number of class intervals and obtain the frequency distribution of expenditure.
