The post is about MCQs Introductory Statistics. There are 25 multiple-choice questions covering topics related to the measure of dispersions, measure of central tendency, and mean deviation. Let us start with the MCQs introductory statistics quiz with answers.

Online MCQs about Basic Statistics with Answers

### MCQs Introductory Statistics with Answers

- A measure of dispersion is always
- Which of these is a relative measure of dispersion
- The measure of spread/dispersion is changed by a change of
- Mean Deviation, Variance, and Standard Deviation of the values 4, 4, 4, 4, 4, 4 is
- The mean deviation of the values, 18, 12, and 15 is
- The sum of squares of deviation is least if measured from
- The sum of squared deviations of a set of $n$ values from their mean is
- Variance is always calculated from
- The lowest value of variance can be
- The variance of a constant is
- Variance remains unchanged by the change of
- $Var(2X+3)\,$ is
- If $a$ and $b$ are two constants, then $Var(a + bX)\,$ is
- Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observations will be
- Standard deviation is calculated from the Harmonic Mean (HM)
- The variance of 5 numbers is 10. If each number is divided by 2, then the variance of new numbers is
- If $X$ and $Y$ are independent then $SD(X-Y)$ is
- If $Y=-8X-5$ and SD of $X$ is 3, then SD of $Y$ is
- The standard deviation is always ———– than the mean deviation
- If the standard deviation of the values 2, 4, 6, and 8 isÂ 2.58, then the standard deviation of the valuesÂ 4, 6, 8, and 10 is
- For the symmetrical distribution, approximately 68% of the cases are included between
- The percentage of values lies between $\overline{X}\pm 2 SD\,$ is
- The measure of Dispersion can never be
- If all values are the same then the measure of dispersion will be
- The range of the values -5, -8, -10, 0, 6, 10 is