A. Directions: State whether the mean, the median, or the mode is being used and justify your answer.

1. In 2012, there were as many people aged 25 and younger in the world as there were people aged 25 and older.

2. The majority of full-time students carry a load of 21 credit units per semester.

3. The average annual return on investment is 10.5%.

B. Given the measurements 20, 26, 40, 39, 25, 36, and 34, compute for the following: ( 4 points)

1.. range

2. mean deviation

3. standard deviation

4. variance

C. Analyze the problem carefully: ( 5 points )

A recent study showed that the cost of buying a typical shopping basket of 40 food items for consumption at home was Php 8,100 in Manila, Php 6,600 in Mandaluyong, Php 6,150 in Pasay, Php 5,100 in San Juan, and Php 4,900 in Pasig. Determine the first quartile, second quartile, eight deciles, fourth deciles, and thirty-eight percentiles.