Statistics: Frequency Distributions and Concepts

A table summarizing data by grouping it into class intervals (ranges) and showing how many data points fall within each interval.

The difference between the highest and lowest values in a dataset.

The number of class intervals used in a frequency distribution. It helps summarize data.

The middle value of each class interval in a frequency distribution. It represents the average value within that interval.

The proportion of data points falling within a specific class interval compared to the total number of data points.

The total number of data points less than or equal to a specific class interval.

Graphs used to visually represent quantitative data, like histograms, bar charts, and line graphs.

Charts and diagrams used to represent qualitative data, like pie charts, bar charts for categories, and tree diagrams.

The width of each class interval in a grouped frequency distribution.

A bar chart that represents the frequency distribution of data.

A line graph that connects the midpoints of each class interval to represent the frequency distribution.

A line graph that represents the cumulative frequencies of data.

Data which is numerically expressed and measured using interval or ratio scales. Examples include age, height, weight, temperature etc.

The process of organizing raw data into meaningful categories or groups.

The range of data divided by the number of classes.

The smallest value in the ungrouped data.

The largest value in the ungrouped data.

A visual representation of data that uses dots to represent individual data points.

A visual representation of data that uses stems and leaves to represent the data values.

A circular chart used to display qualitative data, where the whole circle represents 100% and slices represent fractions of the whole. It shows the relative proportions of each category.

A chart that uses bars to visually compare data values for two or more categories. The length of each bar represents the magnitude of the value.

A graph that displays data points connected by lines, showing trends or changes over time or other variables. It is often used to visualize relationships between variables.

A graphical representation of data that visually shows the relationship between two or more variables. Each point on the graph represents a data point, and the position of the point reflects the values of the corresponding variables.

A chart that uses symbols, often circles, to represent data points. It is useful for displaying the distribution of categorical data and can be used to show the relative frequency or proportion of each category.

A statistical graph that displays the cumulative frequency or relative cumulative frequency of a dataset. It is often used to visualize the distribution of quantitative data and to identify percentiles and quartiles.

Graphs that use shapes or figures to represent data, often used to display qualitative data. They can be more visually appealing than traditional bar charts or pie charts.

A visualization technique used to show the relationship between three variables. It is a powerful tool for exploring data and identifying patterns or trends.

A type of map that displays data geographically, often showing the distribution of certain values or characteristics across different locations.

A diagram that visually represents the hierarchy or relationships between different components of a system. It is often used to show the structure of a complex system or to illustrate decision-making processes.