Statistics- An Introduction

Which one of the following is a relative measure of dispersion?

• Standard deviation

• Variance

• Co-efficient of variation

• None of the above

Convenience sampling is a

• Probability Sampling

• Non-probability Sampling

• Random Sampling

• None of the above

Coefficient of correlation will be always

• More than 0

• More than - 1

• Less than -1

• Between -1 and + 1

Which of the following is the characteristics of a data?

• Aggregate of fact

• Numerical expressed

• Affected by various cause

• All of the above

Multistage Stratified random sampling is

• Probability Sampling

• Selective Sampling

• Non-probability Sampling

• None of the above

We can measure the cause and effect relationship by the help of

• Time series analysis

• Cross-sectional analysis

• Correlation analysis

• Regression analysis

Which of the following are considered output units in a computer?

• Floppy Disk, Dat, CD etc.

• Printers

• Mouse

• Micro Film

Goodness of fit of a distribution is tested by

• t-test

• chi-square test

• f-test

• None of the above

Probability of rejecting the null hypothesis when it is true is called

• Type-II error

• Type-I error

• Standard error

• None of these

'Parameter' refer to the characteristics of the

• Population

• Sample

• Mean

• None of the above