- 17 Marks
QT – Nov 2018 – L1 – Q1b – Forecasting
Determine the number of errors a student would make after 280 minutes of study and the expected change in errors for a 1-minute change.
Question
The study time in minutes and the number of errors on a mock examination paper made by ten (10) ICAG students are given below:
| Student | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Study Time (X) | 90 | 100 | 130 | 150 | 180 | 200 | 220 | 300 | 350 | 400 |
| Errors (Y) | 25 | 28 | 20 | 20 | 15 | 12 | 13 | 10 | 8 | 6 |
(i) Determine how many errors a student would make in the examination if he studied for 280 minutes.
(ii) Determine the expected change in the number of errors if there is a 1-minute change in study time.
Find Related Questions by Tags, levels, etc.
- Tags: Errors Prediction, Regression Analysis, Study Time
- Level: Level 1
- Topic: Forecasting
- Series: NOV 2018
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