Pearson Edexcel IAL Mathematics S3.2.1 Methods for collecting data
Practise judging whether random-number methods can produce a valid simple random sample from a numbered population.
- Syllabus
- First assessment 2019
- Course
- Mathematics YMA01
- Level
- A2
Exam points
- state whether a random-number table can generate the required sample and justify the decision
S3.2.1 - Methods for collecting data question 1
[Maximum number: 2]
Luka wants to carry out a survey of students at his school.
He obtains a list of all 280 students.
State, giving a reason, the advice you would give to Luka regarding the use of his table of numbers for generating a simple random sample of 10 of the Year 12 students.
(2)
To generate a simple random sample, Luka would need to generate two-digit numbers (from 00 to 69)
B1
But Luka's table would not be suitable for generating random two-digit
numbers
B1ft
(2)
Total 15
Notes
(b)
B1 correct critical value 7.779 or better
M1 for a correct non-contextual conclusion (ignore any contradictory contextual comments for this mark) based on their cv and their test statistic
A1 correct conclusion in context with all previous marks scored
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