Worksheet Solutions: Data Interpretation | Know Your Aptitude Class 6 To 8 - Class 8 PDF Download

Q1: The following weights were bench-pressed by a group of Grade 8 students: 32 kg, 41 kg, 15 kg, 22 kg, and 15 kg. 

(i) Find the mean.

Ans: 25 kg

(ii) Find the mode.

Ans: 15 kg

(iii) Find the median.

Ans: 22 kg

(iv) What would be an appropriate graph to use to show this information? 

Ans: Bar graph or pictograph

Q2: Is the height of a child, measured every month for the course of three years, continuous or discrete data?

Ans: Continuous

Q3: A survey asked the question, “Do you prefer eating fresh food at Jimmy’s Restaurant or eating stale food at home?” Is this a fair survey question?

Ans: No, it is biased and provides limited survey options.

Q4: Use the following graphs to answer questions:

(i) Why would a dot graph better show money earned at a lemonade stand every day than a line graph?

Ans: Dots show discrete data.

(ii) Which type of graph would best show height comparisons between boys and girls among different grades?

Ans: Double-bar graph

(iii) Which graph would best show percentage of daily time used for different activities?

Ans: Pie chart

(iv) Which graph would best show the distance someone travelled over the course of a day?

Ans: Line graph