Advertisements
Advertisements
प्रश्न
What do you understand by the word “statistics” in
(i) Singular form
(ii) Plural form?
उत्तर
The word “Statistics” is used in both its singular as well as its plural senses.
(i) In singular sense: Statistics may be defined as the science of collection, presentation, analysis and interpretation of numerical data
(ii) In plural sense: Statistics means numerical facts or observations collected with definite purpose
(iii) For example: Income and expenditure of persons in a particular locality, number males and females in a particular town are statistics.
APPEARS IN
संबंधित प्रश्न
What is primary data?
What secondary data?
Which of the two – the primary or the secondary data – is more reliable and why?
Explain the meaning of the term Variable.
Define cumulative frequency distribution.
The table below shows the daily expenditure on food of 30 households in a locality:
| Daily expenditure (in Rs) | Number of households |
| 100 – 150 | 6 |
| 150 – 200 | 7 |
| 200 – 250 | 12 |
| 250 – 300 | 3 |
| 300 – 350 | 2 |
Find the mean and median daily expenditure on food.
Find the class marks of classes 10 -25 and 35 – 55.
In a frequency distribution table with 12 classes, the class-width is 2.5 and the lowest class boundary is 8.1, then what is the upper class boundary of the highest class?
Explain the meaning of the following terms: Class mark
Can the experimental probability of an event be a negative number? If not, why?
