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प्रश्न
Does the lottery method always give you a random sample? Explain.
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उत्तर
Yes, the lottery method always gives a random sample’s outcome. In a random sample, each individual unit has an equal chance of getting selected. Similarly, in a lottery method, each individual unit is selected at random from the population and thereby has an equal opportunity of getting selected. For example, in order to select a student as a monitor, the slips containing the names of all the students are mixed well, and then a slip is drawn out at random. In this case, all students in the class have an equal chance of getting selected. The probability of a student getting selected through the lottery method is exactly the same as the probability of any one student randomly selected.
संबंधित प्रश्न
There is a certain bias involved in the non-random selection of samples.
Non-sampling errors can be minimized by taking large samples.
Give two examples each of sample, population and variable.
Which of the following methods give better results and why?
Discuss how you would use the lottery method to select 3 students out of 10 in your class?
Explain the procedure of selecting a random sample of 3 students out of 10 in your class, by using random number tables.
What is population?
What is statistic?
Explain in detail about simple random sampling with a suitable example
Explain in detail about systematic random sampling with example
Explain in detail about sampling error
State any three merits of stratified random sampling
Choose the correct alternative:
A ______ may be finite or infinite according as the number of observations or items in it is finite or infinite
Choose the correct alternative:
A ______ of statistical individuals in a population is called a sample
Choose the correct alternative:
A finite subset of statistical individuals in a population is called ______
Choose the correct alternative:
Any statistical measure computed from sample data is known as ______
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
Find the number of households whose monthly expenditure on food is
(b) more than Rs 3000
(c) between Rs 1500 and Rs 2500
