STATISTICS · DATA ANALYSIS · INVESTIGATION 14

Statistics – Mean Median Mode Lab

Edit a small data set and compare mean, median and mode. Observe how an outlier changes the measures.

Guided discoveryLive mathematical modelPractical recordAssessment

Student nameClass / sectionRoll numberExperiment date

Interactive mathematical workspace

Live simulation

The model updates as you adjust the apparatus controls. Values are simulated mathematical outputs, not physical measurements.

Primary result—

Secondary result—

Relationship—

Check—

Adjust a control to begin the investigation.

To investigate Statistics – Mean Median Mode Lab using a dynamic mathematical model and justify a conclusion from recorded values.

Mean = Σx/n · Median = middle value · Mode = most frequent

Enter student details and note the initial settings.

Change one independent variable while keeping the others fixed.

Observe the visual model and note the calculated values.

Repeat with at least three different settings and record the readings.

Use the pattern in your observations to write a mathematical conclusion.

Independent: the control being changed. Dependent: calculated result. Controlled: other settings held constant.

Guided investigation: Change one observation to an extreme value. Compare how mean and median respond.

Mean = Σx/n · Median = middle value · Mode = most frequent

The working will appear here.

Trial	Settings	Result 1	Result 2
Run and record trials to populate this table.

Compare the readings and identify the pattern.

Hypothesis / prediction

Observations and evidence

Conclusion

Sources of error / limitations

#	Settings	Result 1	Result 2	Time

Select the best answer. Feedback is provided after checking.

Assessment score0 / 5

Create a data set with two modes, or explain why it has none.