Statistical Experiments

Population or Sample?

A factory overseer selects 40 threaded rods at random from those produced that week at the factory, then she tests their tensile strength.

• Population

• Sample

The entire group studied.

• sample

• population

A question that anticipates and accounts for a variety of answers is called a/an

• nonstatistical question

• statistical question

• variable

• histogram

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected. 

• systematic

• random sample

• convenience

• biased sampling

The number that occurs most often in data set is called ____.

• Mean

• Median

• Mode

• Redundant

The measure of average which include all the observations in a data.

• Median

• Mode

• Mean

What do the mean, median, and mode measure?

• Central Angle

• Central Position

• Central Tendency

• sample standard deviation

• population standard deviation

• sample mean

• population mean