AP Stats 7.1 Rdg Quiz

A (a)   is a number that describes some characteristic of a sample.

Tags

CCSS.6.SP.A.3

A (a)   is a number that describes some characteristic of a population.

Tags

CCSS.6.SP.A.3

To avoid losing points on the AP exam: When defining a parameter, we suggest including one of these words in your description to make it clear that you aren’t referring to a sample statistic.

• most

• all

• true

• some

True or False: Sampling deviation refers to the fact that different random samples of the same size from the same population produce different values for a statistic.

• True

• False

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

True or False: The sampling variability of a statistic is the distribution of values taken by the statistic in all possible samples of the same size from the same population.

• True

• False

When we simulate a sampling distribution using assumed values for the parameters, like in the chips example, the resulting distribution is sometimes called a (a)   distribution .

Students will often refer to the “sample” distribution when they mean “sampling” distribution. Remind them that a “sample” distribution represents (a)   sample, whereas a “sampling” distribution represents many, many samples. In the text, we avoid the term sample distribution, opting instead for distribution of sample data.

True or False: A statistic used to estimate a parameter is an unbiased estimator if the mean of its sampling distribution is equal to the value of the parameter being estimated.

• True

• False

Select the requirements for an ideal estimator:

• high variability

• low variability

• low bias

• high bias

_______________ means that the statistic has low or no bias.

• Accurate

• Precise

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1