Averages (including IQR): Eduqas GCSE Higher June 2017 Paper 1 Q1

Higher June 2017 Paper 1 Q1

EduqasHigherCurrent spec4 marksAverages (including IQR)

1. Sasha is carrying out a survey into the amount of chocolate teenagers eat in a day.

(a) Here is a question from her survey:

Too much chocolate is bad for your health.
How many pieces of chocolate did you eat yesterday?
Tick (✓) one box.
1-2 ☐ 3-4 ☐ 5-6 ☐

(i) Explain why this is a biased question. [1]

(ii) State one other criticism of the question. [1]

(b) Sasha stands outside a supermarket on a Monday morning and surveys 10 people as they go in.

Are her results likely to be reliable?

Yes ☐ No ☐

Give two reasons to support your answer. [2]

Mark scheme (a)

Scheme	Marks	Comments
(a)(i) Valid comment e.g. ‘The first line expresses an opinion’ or ‘It pushes you to give a low answer’, or ‘It tells you you should not be eating much chocolate’	E1	Do not allow ‘She only asks about one day.’ Allow eg ‘She says too much chocolate is bad for your health.’
(a)(ii) Appropriate criticism e.g. ‘It is too vague’ or ‘How big is a piece?’, ‘Cannot answer no pieces.’ ‘Cannot answer more than 6’.	E1	Allow e.g. ‘She is only asking about 1 particular day’.

Mark scheme (b)

Scheme	Marks	Comments
‘No’ stated or implied with two valid reasons based on sample size, location, time or targeting teenagers e.g. ‘10 people is too few’, ‘People outside a supermarket are not likely to be teenagers’	E2	E1 for ‘No’ with only one valid reason Allow eg ‘The people could all be different’ or ‘Monday morning limits the type of people she can ask.’ or ‘A lot of people may be at work on a Monday morning.’
	(4)