Question

1.A political scientist surveys 25 of the current 99 representatives in a state's congress.

What is the size of the sample:

What is the size of the population:

2.Determine whether the value 30% is a parameter or statistic:

3.A sample of men reveals 30% took calculus

Parameter or statistic.

4. Determine whether the value 85% is a parameter or statistic:

5. 85% of a college's students are women

Parameter

Statistic

6. Because of the difficulty of weighing a bear in the woods, researchers caught and measured 54 bears, recording their weight, neck size, length, and sex. They hoped to find a way to estimate weight from the other, more easily determined quantities.

Which of the following are quantitative variables for this study?

Neck Size

Weight

Length

Sex

Bear Species

Answer 1

1.a=Size of sample is 25

1.b=Size of population is 99

2.Depends on the sample or population.

3..A sample of men reveals 30% took calculus is statsitic, as not the entire population has been surveyed rather a sample of men .

4.Depends whether it is  sample or population.

5. 85% of a college's students are women is a parameter as you have surveyed the entire population(i.e is the total college students)

6.

QUANTITATIVE VARIABLES

• Neck Size
• Weight
• Length

CATEGORICAL VARIABLES

• Sex
• Bear Species