2. Why does the range cannot give an accurate picture of the spread of scores?

A. Because it is applicable, as it is based on extremes of the distribution.
B. Because it is less desirable, as it is based on only one score at the extremes of the distribution. Hence, it is quite unstable
C. Because it is not applicable, as it is based on extremes of the distribution. Hence, it is either unstable or stable
D. Because it is less desirable, as it is based on only two scores at the extremes of the distribution. Hence, it is quite unstable

3. Suppose a number of students are added to an original group of 6 students where all of whose ages are equal to the mean age of the original group. The standard deviation will______________.

A. Increase
B. Decrease
C. Remain unchanged
D. Cannot be determined

4. The mean daily wage for 9 construction workers is Php 400. How much will one additional daily wage of Php 1000 for the foreman increase the mean daily wage for all 10 people.

A. Php 30
B. Php 40
C. Php 50
D. Php 60​