Ch 1 pt 2 - Intro to Statistics

Question 1

Statistics

Answer 1

Mathematical procedures for organizing, summarizing and interpreting data.

Question 2

Descriptive statistics

Answer 2

Statistics for organizing information. It describes the characteristics of the sample.

Question 3

Inferential statistics

Answer 3

Statistics for interpreting information. It’s used to generalize from the sample findings to the population. It’s used to draw conclusions.

Question 4

Describing data: Statistics

Answer 4

Derived from data and measures describing samples (describes samples and are calculated from data collected from samples). Commonly calculated statistics include the mean (M) and Standard Deviation (SD).

Question 5

Describing data: Population parameters

Answer 5

Derived from data and measures describing populations (describes populations, which can be commonly described in terms of their means and SDs). When describing a population, we use the symbols μ (mu) which represents the population mean and σ (sigma) which represents population SD.

Question 6

Raw scores

Answer 6

Represented by letters (X,Y)

Question 7

Number of data points

Answer 7

Represented by N. N also refers to sample size.

Question 8

Summation

Answer 8

Represented by the sign Σ (sigma). Summation means adding up all values.