Advertisements
Advertisements
प्रश्न
Suppose there are 10 students in your class. You want to select three out of them. How many samples are possible?
Advertisements
उत्तर
Population = 10
Number of possible samples = `""^nC_r=""^10C_3`
`= (10!)/(3!(10-3)!)`
`=(10!)/(3!7!)`
= 120
संबंधित प्रश्न
Give two examples each of sample, population and variable.
Which of the following errors is more serious and why?
Discuss how you would use the lottery method to select 3 students out of 10 in your class?
Does the lottery method always give you a random sample? Explain.
What is sample?
What is standard error?
Explain in detail about systematic random sampling with example
Explain in detail about sampling error
State any two merits of simple random sampling
State any three merits of stratified random sampling
State any two merits for systematic random sampling
A random sample of 60 observations was drawn from a large population and its standard deviation was found to be 2.5. Calculate the suitable standard error that this sample is taken from a population with standard deviation 3?
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:
Any statistical measure computed from sample data is known as ______
Choose the correct alternative:
In simple random sampling from a population of units, the probability of drawing any unit at the first draw is
Determine the standard error of proportion for a random sample of 500 pineapples was taken from a large consignment and 65 were found to be bad
A sample of 100 students is drawn from a school. The mean weight and variance of the sample are 67.45 kg and 9 kg. respectively. Find (a) 95% (b) 99% confidence intervals for estimating the mean weight of the students
