Let’s solve each question step by step.
---
History Test Scores (already in order from highest to lowest):
100, 96, 90, 90, 84, 80, 75, 75, 75, 55, 49
→ Total = 11 scores
---
Question 1: Median of History test
Median is the middle number when all numbers are in order.
Since there are 11 scores (odd number), the median is the
6th score.
Counting:
1st: 100
2nd: 96
3rd: 90
4th: 90
5th: 84
6th: 80 ← median
7th: 75
8th: 75
9th: 75
10th: 55
11th: 49
✔ Median =
80
---
Question 2: Mode of History test
Mode is the number that appears most often.
Look at frequencies:
- 100 → 1 time
- 96 → 1
- 90 → 2 times
- 84 → 1
- 80 → 1
- 75 →
3 times ← most frequent
- 55 → 1
- 49 → 1
✔ Mode =
75
---
Question 3: Range of History test
Range = Highest – Lowest
Highest = 100
Lowest = 49
Range = 100 – 49 =
51
✔ Range =
51
---
Question 4: Mean of History test
Mean = sum of all scores ÷ number of scores
Add them up:
100 + 96 = 196
196 + 90 = 286
286 + 90 = 376
376 + 84 = 460
460 + 80 = 540
540 + 75 = 615
615 + 75 = 690
690 + 75 = 765
765 + 55 = 820
820 + 49 =
869
Total sum = 869
Number of scores = 11
Mean = 869 ÷ 11
Let’s divide:
11 × 79 = 869 → because 11×70=770, 11×9=99 → 770+99=869
✔ Mean =
79
---
Now for the
Maths test marks:
Scores given:
100, 100, 97, 85, 85, 82, 74, 74, 74, 66, 54
→ Also 11 scores. But they’re NOT in order yet! We need to sort them first for median and mode.
Sort from highest to lowest (or lowest to highest — doesn’t matter as long as ordered):
Sorted:
100, 100, 97, 85, 85, 82, 74, 74, 74, 66, 54
Wait — actually, let’s write them in ascending order to be safe:
54, 66, 74, 74, 74, 82, 85, 85, 97, 100, 100
Yes, that’s correct.
---
Question 5: Median of Maths marks
Again, 11 scores → median is the 6th one.
Counting in sorted order (ascending):
1st: 54
2nd: 66
3rd: 74
4th: 74
5th: 74
6th: 82 ← median
7th: 85
8th: 85
9th: 97
10th: 100
11th: 100
✔ Median =
82
---
Question 6: Mode of Maths marks
Which number appears most?
- 54 → 1
- 66 → 1
- 74 →
3 times
- 82 → 1
- 85 → 2
- 97 → 1
- 100 → 2
So 74 appears 3 times — more than any other.
✔ Mode =
74
---
Question 7: Range of Maths marks
Highest = 100
Lowest = 54
Range = 100 – 54 =
46
✔ Range =
46
---
Question 8: Mean of Maths marks
Sum all scores:
Start adding:
100 + 100 = 200
200 + 97 = 297
297 + 85 = 382
382 + 85 = 467
467 + 82 = 549
549 + 74 = 623
623 + 74 = 697
697 + 74 = 771
771 + 66 = 837
837 + 54 =
891
Total sum = 891
Number of scores = 11
Mean = 891 ÷ 11
Check: 11 × 81 = 891 → because 11×80=880, plus 11=891
✔ Mean =
81
---
Final Answer:
1. 80
2. 75
3. 51
4. 79
5. 82
6. 74
7. 46
8. 81
Parent Tip: Review the logic above to help your child master the concept of mean mode median range worksheet.