Statistics

Study of data collection, analysis, interpretation, and presentation.

Types of DataCollecting DataDescribing Data: Charts and Summaries
Probability and RandomnessStatistical InferenceCorrelation and Causation
Sports and PerformanceHealth and MedicineBusiness and Marketing
Breaking Down ProblemsChecking Your Work
Types of DataCollecting DataDescribing Data: Cha...Probability and Rand...Statistical Inferenc...Correlation and Caus...Sports and Performan...Health and MedicineBusiness and Marketi...Breaking Down Proble...Checking Your Work
Basic Concepts

Describing Data: Charts and Summaries

Making Sense of Data

Once you have data, it's time to organize and summarize it so everyone can understand what's going on.

Charts and Graphs

  • Bar charts: Great for comparing categories.
  • Pie charts: Show proportions in a whole.
  • Line graphs: Track changes over time.
  • Histograms: Show the distribution of numerical data.

Summaries

  • Mean: The average value.
  • Median: The middle value when data is ordered.
  • Mode: The most common value.

Why Use Visuals?

Visuals help people spot trends, differences, and patterns quickly. They make information easier to digest and share.

Everyday Examples

Meteorologists use line graphs to show temperature changes, while businesses use bar charts to compare product sales.

Examples

  • Using a pie chart to show how students get to school (bus, car, bike, or walk).

  • Calculating the average (mean) score on a math test.

In a Nutshell

Charts and summaries turn raw data into useful stories.

Next
Probability and Randomness