1211. Which of the following is easy to calculate and simple to comprehend :
A. Arithmetic mean *
B. Geometric mean
C. Harmonic meand
D. All of these
1212. Which of the following is a measure of dispersion:
A. Percentile
B. Quartile
C. Standard deviation
D. All of these *
1213. The mean of the squares of deviation of all the observations from their means is called :
A. Variance *
B. Standard deviation
C. Skewness
D. Mean deviation
1214. The smaller value of the standard deviation indicates that most of the observations in the data set are close to the :
A. Mean *
B. Median
C. Mode
D. Variance
1215. Which of the following is a balancing point of data set :
A. Arithmetic mean *
B. Standard deviation
C. Mode
D. Variance
1216. Which of the following is independent of origin :
A. Variance *
B. Median
C. Mean
D. Mode
1217. Which of the following cannot be negative :
A. Variance
B. Mean
C. Mode
D. Standard deviation *
1218. The power to which deviations are raised before averaging them is called :
A. Standard deviation
B. Moment *
C. Skewness
D. Mode
1219. Any departure from symmetry of the distribution is called :
A. Skewness *
B. Peakness
C. Flatness
D. None
1220. If the left tail of the distribution is longer than its right tail.then distribution is :
A. Positively skewed
B. Negatively skewed *
C. No skewness
D. Centrally skewed