Question

21. A distribution of income for a sample of 45 people that included the presidents of the five largest corporations in the United States and forty assembly line workers would be

1. unskewed.
2. negatively skewed.
3. positively skewed.
4. symmetrical.

22. A class has 20 men and 10 women. The ratio of women to men is

1. 2 to 1.
2. 1 to 2.
3. 20%
4. .2

23. A frequency distribution should reflect a balance of

1. detail and conciseness.
2. time and money.
3. questions and answers.
4. elegance and symmetry.

24. A line chart or frequency polygon is based on

1. the upper limits of each interval.
2. the lower limits of each interval.
3. the midpoint of each interval.
4. any limit which the researcher selects.

25. A nation had a birth rate of 20 in 1990. The rate fell to 13 in 2005. What was the percentage change?

1. 35%
2. 54%
3. -35%
4. -54%

Answer 1

21) positively skewed.

22) option B is correct 1 to 2

23) detail and conciseness.

24) the midpoint of each interval.

25) -35%