**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