A teacher wants to see, whether the new technique of teaching she applied…
2022
A teacher wants to see, whether the new technique of teaching she applied after quarterly test was effective or not. She takes the scores of the 5 weakest children in quarterly test (out of 25) and half yearly test (out of 25) – Which of the following is true?
- A.
Teacher should not use new technique.
- B.
Teacher should use new technique.
- C.
Teacher should use old technique.
- D.
None
Attempted by 79 students.
Show answer & explanation
Correct answer: B
Compute the change in score for each student (Half yearly − Quarterly):
Ashish: 10 → 15, change +5
Arun: 15 → 18, change +3
Kavita: 12 → 16, change +4
Maya: 20 → 21, change +1
Raj: 9 → 5, change −4
Total change: +5 +3 +4 +1 −4 = +9
Average change: 9 ÷ 5 = 1.8 marks (increase)
Conclusion: Four out of five students improved and the average score rose, so the new technique appears to be effective. Therefore the correct recommendation is that the teacher should use the new technique.
Note: This is a small sample; for stronger evidence consider a larger sample or a formal statistical test.