AP Statistics Chapter 1 exam 2024
Statistics - the science of collecting, organizing, and interpreting numerical data
Individuals - Objects described by a set of data
Variable - Any characteristic of an individual (can be measured, recorded)
Objects - People, animals, things
Categorical variable - Records which of several groups an individual belongs to
Quantitative variable - Take numeric values for future calculations or
interpretations
What kind of variable is gender? - Categorical
What kind of variable is race? - Categorical
What kind of variable is heart beats/minute? - Quantitative
, AP Statistics Chapter 1 exam 2024
Distribution - Tells what values a variable can be and how often it takes on these
values (frequency)
Stemplots - Give a picture of a distribution, while including the actual data values
Splitting stems - If all data falls within a small number of stems you can double the
stems and place 0-4 on the first stem, and 5-9 on the second stem
Examining characteristics of a distribution - Center, shape, and spread
In a distribution, identify any... - Outliers
Modes - Any major peak
Unimodal - A distribution with only one major peak
Bimodal - A distribution with two peaks
Symetric distributions - the right hand side and left hand side are approximate
mirror images of each other
Statistics - the science of collecting, organizing, and interpreting numerical data
Individuals - Objects described by a set of data
Variable - Any characteristic of an individual (can be measured, recorded)
Objects - People, animals, things
Categorical variable - Records which of several groups an individual belongs to
Quantitative variable - Take numeric values for future calculations or
interpretations
What kind of variable is gender? - Categorical
What kind of variable is race? - Categorical
What kind of variable is heart beats/minute? - Quantitative
, AP Statistics Chapter 1 exam 2024
Distribution - Tells what values a variable can be and how often it takes on these
values (frequency)
Stemplots - Give a picture of a distribution, while including the actual data values
Splitting stems - If all data falls within a small number of stems you can double the
stems and place 0-4 on the first stem, and 5-9 on the second stem
Examining characteristics of a distribution - Center, shape, and spread
In a distribution, identify any... - Outliers
Modes - Any major peak
Unimodal - A distribution with only one major peak
Bimodal - A distribution with two peaks
Symetric distributions - the right hand side and left hand side are approximate
mirror images of each other
