AP Stats Population vs Statistics

To test a claim about a mean, when the population standard deviation is unknown we use:

• z procedures

• Pythagorean Theorem

• t procedures

• np > 10 and n(1-p) > 10

30% out of 200 Mr. Tran’s students earned A for the final grade average from the last semester.

Identify the sample {a partial part of the large group}

• 200 Forest Park students

• 30% of Forest Park students

• 200 Mr. Tran's students

• 30% of 200 Mr. Tran's students

What is the term in statistics for the entire collection or group of individuals being studied?

• population

• sample

• parameter

• statistic

The entire group studied.

• sample

• population

A survey is carried out at Penn State Altoona to estimate the proportion of all undergraduate students living at home during the current term. Of the 3,838 undergraduate students enrolled at the campus, a random sample of 100 was surveyed. What is the population of the study?

• All the 3,838 undergraduate students enrolled at the campus

• The 100 who were surveyed

• All the students in universities across America

• All students living at home in the current term.

Population or Sample? A quality control engineer is curious about the thickness of paint on a car at her factory. She randomly selects 30 points on the car and measures the paint thickness at each of those points.

• Population

• Sample

What is the branch of mathematics dealing with the collection, organization, analysis, interpretation and presentation of data?

• Algebra

• Geometry

• Probability

• Statistics