A table with one sales count per day calls for the mean when the question asks for an average per day. The mean shares the combined total equally across the days. Put every day's value exactly once in a Desmos list, then use and round if needed. Don't choose a count because it appears in the table.
Hints
- Hint 1
The mean is the total divided by the number of values, not a count from one row. Each day contributes one value. How many days share the bakery's total sales?
- Hint 2
A Desmos list holds all the daily counts together. Copy the counts from Monday through Friday, one per day, then ask Desmos for the mean of that list.
Step-by-step
Find the mean with a Desmos list
Step 1Translate mean into a calculation
The mean is a fair-share value: add every day's count, then divide by the number of days. The table covers five days, so . Wednesday's is one part of that total, not the five-day mean by itself.
- Step 2
Enter the five daily counts
Type in Desmos. Desmos shows . This list follows the table from Monday to Friday, with one entry per day, so Desmos can use all five counts.
- Step 3
Read the mean and check the rounding
Type . Desmos shows : it adds the list's counts and divides by the five days. That's already a whole number, so the mean is cupcakes sold per day. Choice C.