Organisation of Data
Class 11 · Economics · 9 Questions
Can there be any advantage in classifying things? Explain with an example from your daily life.
What is a variable? Distinguish between a discrete and a continuous variable.
Explain the 'exclusive' and 'inclusive' methods used in classification of data.
In a city 45 families were surveyed for the number of Cell phones they used. Prepare a frequency array based on their replies as recorded below.
What is 'loss of information' in classified data?
Do you agree that classified data is better than raw data? Why?
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 |
"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.