Pie charts in Google Sheets - Practice Problems & Coding Challenges

Challenge - 5 Problems

📊 Formula Result

intermediate

Calculate percentage for pie chart slices

You have sales data in cells A2:A5 and total sales in cell A6. Which formula in B2 correctly calculates the percentage share of sales for the first item to use in a pie chart?

A =$A$6/A2

B =A2/A6

C =A2/$A$6

D =SUM(A2)/$A$6

💡 Hint

Use absolute reference for total sales to keep it fixed when copying the formula.

Option C uses an absolute reference to cell A6, so when copied down, it always divides by the total sales. This correctly calculates the percentage for each item.

Option C uses a relative reference to A6, which changes when copied, causing wrong results.

Option C divides total sales by the item sales, reversing the ratio.

Option C sums only one cell (A2), which is redundant and less clear.

❓ Function Choice

intermediate

Choose the function to sum data for pie chart

You want to create a pie chart showing total expenses by category listed in B2:B6. Which function correctly sums the expenses in C2:C6 to get the total for the chart?

A =SUM(C2:C6)

B =COUNT(C2:C6)

C =AVERAGE(C2:C6)

D =MAX(C2:C6)

💡 Hint

You want the total amount, not count or average.

SUM adds all values in the range, which is needed for total expenses.

COUNT counts how many numbers are in the range, not their sum.

AVERAGE calculates the mean, not total.

MAX finds the largest value, not total.

🎯 Scenario

advanced

Fixing pie chart data range error

You created a pie chart in Google Sheets using data from A1:B5. Later, you add a new category in row 6 but the pie chart does not update to include it. What is the best way to fix this?

A Use a filter to hide the new row

B Delete and recreate the chart to include the new row

C Change the chart type to bar chart and back to pie chart

D Manually update the chart data range to A1:B6

💡 Hint

Charts do not automatically expand their data range when new rows are added outside the original range.

Option D is correct because updating the data range to include the new row ensures the chart includes the new data.

Option D is unnecessary and inefficient.

Option D does not affect data range.

Option D hides data and does not fix the chart range.

❓ data_analysis

advanced

Interpreting pie chart slice sizes

A pie chart shows four slices with percentages: 10%, 20%, 30%, and 40%. If the total sales are $5000, what is the sales amount represented by the 30% slice?

A $1500

B $2000

C $1000

D $3000

💡 Hint

Calculate 30% of total sales.

30% of $5000 is 0.30 × 5000 = $1500.

Other options are incorrect calculations of the percentage.

🧠 Conceptual

expert

Understanding pie chart limitations

Which of the following is a key limitation of pie charts when visualizing data?

A They always show data in 3D

B They are not good for showing changes over time

C They cannot display percentages

D They require complex formulas to create

💡 Hint

Think about what pie charts represent best.

Pie charts show parts of a whole at one point in time, so they are not suitable for showing trends or changes over time.

Option B is false because pie charts display percentages clearly.

Option B is false because pie charts are easy to create without complex formulas.

Option B is false because pie charts can be 2D or 3D depending on settings.