Vocabulary Words Flashcards
Statistics is…
The Study of variability
2 Branches of AP STAT?
Inferential and Descriptive
Descriptive statistics
Describes the data collected, Mean, Median, a summary of what’s there
Inferential statistics
Makes inferences about populations using data drawn from the population. The big picture.
Inferential and Descriptive Difference
Descriptive statistics are distinguished from inferential statistics (or inductive statistics), in that descriptive statistics aim to summarize a sample, rather than use the data to learn about the population that the sample of data is thought to represent.
Data is…
Anything collected information
Population is…
The group you are interested in
Sample is…
A subset of a population
Parameter is…
A numerical summary of a population
Statistics are…
A numerical summary of a sample
Census is…
Like a sample of the entire population get information from ever member of the population
Random Variables are
If you randomly choose people from a list, their everything will be consider variable. I.e Hair color, Age, Sex, height, ect.
Quantitative variables are…
numeric: such as height, age, SAT score
Categorical variables…
Fit in a category Such as: yes/no, blonde/brunette. Male/Female
Frequency is…
How often things comes up
