Ch.1 What is Statistics

Question 1

Population

Answer 1

is the entire group that you want to draw conclusions about.

Question 2

sample

Answer 2

is the specific group that you will collect data from

Question 3

Parameters

Answer 3

are numbers that summarize data for an entire population.

Question 4

Statistics

Answer 4

are numbers that summarize data from a sample, i.e. some subset of the entire population.

Question 5

Descriptive statistics

Answer 5

deals with methods of organizing, summarizing, and presenting data in a convenient and informative way.

Question 6

Inferential statistics

Answer 6

deals with methods of making estimates, predictions, or decisions about a population based on sample data.

Question 7

significance level

Answer 7

is a measure of reliability that measures how frequently the conclusion about a population will be wrong in the long run.

Question 8

confidence level

Answer 8

is a measure of reliability that measures the proportion of times that an estimating procedure will be correct.

Question 9

statistical inference

Answer 9

Statistical inference is the process of making an estimate,
prediction, or decision about a population based on a sample.