a. Geometric Mean b. Median c. Arithmetic Mean d. Mode e. Harmonic Mean Choose the correct answer from the options given below:
a. Skewness studies the flatness or peakedness of the distribution b. A positively skewed distribution curve is stretched more to the right than to the left c. On the basis of empirical relationship between mean, mode and median for moderately asymmetrical distribution, Karl Person’s coefficient of skewness can be measured by 3 (Mean – Median) […]
Test Situation a) Z-test i) Comparing the difference in the mean values of more than two sample groups (parametric data) b) ANOVA ii) Testing the significance of the difference between averages of two large sized sample groups (Parametric data) c) Chi-Square Test iii) Comparing the differences in the mean value of more than two […]
Statement 1: The geometric mean of the two regression coefficients of X and Y variables gives the value of the coefficient of correlation. Statement 2: If the population distribution is not normal and sampling distribution of mean is prepared by taking small sized samples, the sampling distribution of men is not normal.
(i) The values of the statistical measures based on the sampled nits are called values of statistic (ii) In the simple random sampling technique, the element of the population and the unit of the sample are different (iii) Snow-ball sampling technique is a probability based sampling technique (iv) The “ law of statistical regularity “ […]
Statement I – If the value of β2, i.e., μ4/ σ4 of a distribution gives the value more than 3, its curve is platykurtic. Statement II – In a moderately asymmetrical distribution, the standard deviation is 1.25 times of mean deviation.
Covariance between X and Y series= -17.8 Standard deviation of X series = 6.6 Standard deviation of Y series = 4.2 No. of pairs of observation= 20 The co-efficient of correlation is: