Question

1. The sum of the squares fo the deviations about mean is:

(A) Zero

(B) Maximum

(C) Minimum

(D) All of the above

2. The sum of the squares of the deviations of the values of a variable is least when the deviations are

measured from:

(A) Harmonic mean

(B) Geometric mean

(C) Median

(D) Arithmetic mean

3. Any measure indicating the centre of a set of data, arranged in an increasing or decreasing order of

magnitude, is called a measure of:

(A) Skewness

(B) Symmetry

(C) Central tendency

(D) Dispersion

4. Scores that differ greatly from the measures of central tendency are called:

(A) Raw scores

(B) The best scores

(C) Extreme scores

(D) Z-scores

5. The measure of central tendency listed below is:

(A) The raw score

(B) The mean

(C) The range

(D) Standard deviation

6. The mean of 10 observations is 10. All the observations are increased by 10%. The mean of increased

observations will be:

(A) 10

(B) 1.1

(C) 10.1

(D) 11

7. The sample mean of first n natural numbers is:​

Answer 1

Answer:

(1) zero (2)mean (3) ? (4) raw scores (5) the mean