Revise later
SpaceTo flip
If confident
All Flashcards
Explain the concept of discrete variables.
Discrete variables are countable and have a finite number of possible values, such as the number of cars in a parking lot.
Explain the concept of continuous variables.
Continuous variables can take on infinitely many values within a range, such as height or temperature.
Explain the purpose of using histograms.
Histograms are used to visualize the distribution of quantitative data by grouping data into bins and displaying the frequency of each bin.
Explain the purpose of using frequency polygons.
Frequency polygons are used to compare multiple distributions on the same graph by plotting points at the midpoints of each bin and connecting them with lines.
Explain the purpose of using ogives.
Ogive graphs are useful for finding percentiles and medians, showing the cumulative frequency of data points.
What is the definition of a histogram?
A graph that uses bars to show the distribution of quantitative data, grouped into bins. Bar height indicates frequency.
What is the definition of a frequency polygon?
A line graph version of a histogram, plotting points at the midpoints of each bin and connecting them with lines.
What is the definition of an ogive?
A cumulative frequency plot showing the number or proportion of data points less than or equal to a given value.
What is the definition of a stemplot?
A way to display the distribution of data while retaining individual data values. It consists of stems (leading digits) and leaves (trailing digits).
What is the definition of a dotplot?
A simple display of data where each data point is represented by a dot above a number line.
What are the differences between a histogram and a bar graph?
Concept 1: Histogram - Used for quantitative data, bars touch unless there's a gap in data | Concept 2: Bar Graph - Used for categorical data, bars do not touch.
What are the differences between discrete and continuous variables?
Concept 1: Discrete Variables - Countable, finite values | Concept 2: Continuous Variables - Infinite values within a range.
What are the differences between a histogram and a frequency polygon?
Concept 1: Histogram - Uses bars to represent frequency | Concept 2: Frequency Polygon - Uses lines connecting midpoints of bins.