I'll work through each problem step by step.
Problem 1: Mean of weekly expenses
Stephanie spent: $40, $46, $54, $50, $36, $48, and $52
To find the mean: Add all values, then divide by the count (7 days).
Sum = 40 + 46 + 54 + 50 + 36 + 48 + 52
Let me calculate:
- 40 + 46 = 86
- 86 + 54 = 140
- 140 + 50 = 190
- 190 + 36 = 226
- 226 + 48 = 274
- 274 + 52 = 326
Mean = 326 ÷ 7 = 46.57...
Wait, let me recalculate more carefully:
40 + 46 = 86
86 + 54 = 140
140 + 50 = 190
190 + 36 = 226
226 + 48 = 274
274 + 52 = 326
326 ÷ 7 = 46.571428... ≈ $46.57
Actually, let me verify this sum again using a different approach:
(40 + 50) + (46 + 54) + (36 + 48) + 52
= 90 + 100 + 84 + 52
= 190 + 84 + 52
= 274 + 52
= 326
Yes, 326 ÷ 7 = 46.571428...
Hmm, but let me check if there's a cleaner answer. Let me try once more with Python to be absolutely sure.
Parent Tip: Review the logic above to help your child master the concept of mean median mode range word problems worksheet.
