Statistic Vocab Unit 2

Intro to stats

mean

Adding all data then diving by the sum of n 

median

middle is found when the data is arranged in order then looking at the middle

mode

The number(s) that are repeating/appearing most often

range

High - low

Descriptive Stats

• organizing & summarizing information

• include construction of graphs, charts, and tables

• Includes calculations of various descriptive measures

• - Ex: averages, measures of variation, and percentiles

Inferential stats

Methods for drawing and measuring the reliability of conclusion about a population based on information obtained from a sample of the population. 

(words- infer, estimates(s), predicts(ion)(s), sample)

Parameter (Population)

The collection of all individuals or items under consideration in a statistical study.

Statistic (Sample)

A part of a population from which information is obtained.

Qualitative

Refers to observations that are attributes.

Ex: eye color, blood type, gender, age

Quantitative

refers to observations that are numerical. 

Ex: Height, percentage of seniors with college grants, etc.

Quantitative (Discrete numerical data)

Results from a count

Ex: # of students in the class

Quantitative (Continuous numerical data)

Results from measures of quantity’s

Ex: temp, time, length, weight, mean