Chapter 5

Question 1

Number describing characteristic of population.

Answer 1

Parameter

Question 2

describing characteristics of sample

Answer 2

Statistic

Question 3

Each time we take a random sample from a pop. we are likely to get a different set of individuals and calculate a different statistic.

Answer 3

Sample variability

Question 4

Symbol for pop. size

Answer 4

N

Question 5

Symbol for sample size

Answer 5

n

Question 6

Symbol for # of successes in the pop.

Answer 6

k

Question 7

The variation from sample to sample when you take lots of random samples of the same size from a given population.

Answer 7

Sampling Distribution

Question 8

The spread of its sampling distribution; depends on the design and the sample size.

Answer 8

Variability of a statistic

Question 9

TRUE OR FALSE: If we increase the sample size, the statistic from the larger sample is less variable.

Answer 9

True

Question 10

Concerns the center of the sampling distribution.

Answer 10

Bias

Question 11

If the mean of the sampling distribution of a statistic is equal to the true value of the parameter being estimated.

Answer 11

Unbiased