Question 18 of 18intermediate✨ CreateShort Answer10 marks

Small-group project: Pick at least one of the following. Make groups of 8 to 10. Collect data individually as needed. Put together everyone's data and do the appropriate analysis and visualisation. (a) Our heights vs. our family's heights: Collect the heights of your family members. (i) Make a dot plot showing heights of just your family members. Describe its variability and central tendency. (ii) Make a double-bar graph showing each student's height next to their family's mean height. (iii) Look at everyone's data and share your observations. (b) Estimating time: Check the time and close your eyes. Open them when you think 1 minute has passed (no counting). Note down after how many seconds you opened your eyes. Collect this data for yourself and for your family members. Repeat this activity to estimate 3 minutes. (i) Make two dot plots (for 1 minute and 3 minutes) showing estimates of just your family members. (ii) Mark these on the respective dot plots. Describe its variability and central tendency. (iii) Make a double bar graph showing each family's mean 1 minute estimate and mean 3 minute estimate. (iv) Look at everyone's data and share your observations.

Correct Answer

(a) Our heights vs. our family's heights: Students collect family height data. Create individual dot plots. Compare student height with family mean height using double-bar graphs. Analyze patterns across all families.

(b) Estimating time: Students estimate 1 minute and 3 minutes without counting. Create dot plots of estimates. Calculate mean and median. Compare accuracy between time periods. Observe patterns in estimation skills.

Exercise: Figure it Out (Section 4) | Q: 13 | (Page Page 37-38)
For More Understanding

Explanation

These group projects develop collaborative data collection and analysis skills. Students combine individual data to create larger datasets, visualize using dot plots and double-bar graphs, and analyze patterns across multiple families or groups.

Solution Steps

  1. Collect family height data

  2. Create individual dot plots

  3. Compare student height with family mean height using double-bar graphs

  4. Analyze patterns across all families

  5. Estimate 1 minute and 3 minutes without counting

  6. Create dot plots of estimates

  7. Calculate mean and median

  8. Compare accuracy between time periods

  9. Observe patterns in estimation skills

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