In tilton school there are 380 students in key stage 3 240 students in key stage 4 110 students in key stage 5 phoebe is carryin
g out a survey. she needs a sample of 100 students
1 answer:
Answer:
52
Step-by-step explanation:
Total Number of students :
Stage 3 : 380
Stage 4 : 240
Stage 5 : 110
Total = (380 + 240 + 110) = 730
Number of samples required = 100
Number of key stage 3 students required :
(Key stage 3 / total) * number of samples
(380 / 730) * 100
= 0.5205479 * 100
= 52.0547
= 52
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