Chapter 4 Flashcards
unorganized data
raw data
an organized summary of data indicating the number of responses, or frequency, of each value
frequency distribution
the total number of responses for a value
count
- provides the percent of all responses for each value
- calculated by dividing the number of responses for a value by the total number of cases including those with no value or response
A percentage distribution
• adjusts for missing data or no responses.
• It is calculated by taking the number of responses or cases for each value divided by the total number of cases
excluding missing values or no responses.
valid percentage distribution
provides the number or percentage of responses for each value including the number of lower responses (if ordered low to high) or higher (if ordered high to low)
cumulative distribution
condensing data by grouping the values into broad categories
group frequency distribution
a grouping in a grouped frequency distribution is called
class
the low and high values of a class in a grouped frequency distribution
Class boundries
The width between call boundaries is called
class interval
the middle value of a class interval
class midpoint