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# Unofficial Mark Scheme: AQA Mathematics Unit 1 (Statistics and Number)

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Problems with the survey
1. The options overlap (1)
2. There isn't an option for more than x / no time scale(1)

Ratio in its simplest form
16:9 (2)

Pie Chart Question
37.5% (3)

Standard Form Question
2.71 x 10-3 (3)
(Median) stays the same (1)

Stem and Leaf Diagram
Correctly drawn Stem and Leaf diagram with all values in order (4)

Reward Points Question
£6 (3)

Frequency Polygon Question
Correctly drawn frequency polygon (2)

Upper and Lower Bounds Question
27 (4)

Histogram Question
a) Correctly drawn histogram (4)
b) x = 110 (2)

Relative Frequency (Dartboard Question)
0.31 (4)

Cumulative Frequency Question
Pass mark was 24
14 people attained a B

Box and Whisker Plot
Correctly drawn Box and Whisker Plot (4)

[Median = 33]

Stratified Sampling Question
Values should add up to 720 (3)

[Unsure of whether the values were integers or decimals - e.g. 123.5].

Probability Question
0.6 (4)

4 (3)
2. (Original post by Jamie Vardy)
Question 1
Problems with the survey.
1. The options overlap (1)
2. There isn't an option for more than x (1)
For Question 1 I put
1. The questions overlap
2. No time scale (did it mean a month, year, ever...)

Hope this is worth the full marks, i hate these kind of questions
3. Not sure of the question number but the answer to the question about "A" cards was 4
4. For the probability on apples question i used a tree diagram and worked out probability of getting same colour apples then took that figure away from 1, I think I endeded up with 0.4 from 1-0.6=0.4.
5. Can anyone remember what they put for the animals in the pie chart question? And the percentage?

6. I think this Probability question about the odds of getting different coloured apples was one of the harder questions, here is my working out
7. (Original post by NatalieT123)
Can anyone remember what they put for the animals in the pie chart question? And the percentage?
Yes(ish) either 27.5 or 37.5. or 32.5

It definstly had .5 on the end and was roughtly a 3rd
8. (Original post by bigoliver)
Yes(ish) either 27.5 or 37.5. or 32.5

It definstly had .5 on the end and was roughtly a 3rd
I remember now, this is my answer...

117/360×100=32.5. So 32.5% was my answer
9. (Original post by bigoliver)
I remember now, this is my answer...

117/360×100=32.5. So 32.5% was my answer
it was 360-225=135
135/360x100= 37.5
10. (Original post by revisionbud)
it was 360-225=135
135/360x100= 37.5
That's probably what i put then, i couldn't remember the figures but I'm sure I got that one right.

Thanks
11. Question 2) Ratio
64:36
32:18
16:9
12. I partly rememer the last question about How Many chains can be made.

I worked out the 2 smallest possible lengths, added them together, and divided the length of the original by the combined sum of the two smaller lenghts and i think the result was 27.012...... which (from memory) i rounded down to 27 full chains
13. (Original post by revisionbud)
Question 2) Ratio
64:36
32:18
16:9
I got 16:9 too, thanks
14. (Original post by Jamie Vardy)
Problems with the survey
1. The options overlap (1)
2. There isn't an option for more than x / no time scale(1)

Pie Chart Question
37.5% (3)

Upper and Lower Bounds Question
27 (4)

Histogram Question
Correctly drawn histogram (4)

Probability Question
0.6 (4)

4 (3)
Which was the histogram q??? Im worried i missed a page?!?
15. Dart board question.
16. (Original post by revisionbud)
Dart board question.
Do you remember the working out please? I'm trying to remember my answer
17. How i solved the A tile question..
18. The odds of picking A tile question was also the last question on the foundation paper
19. (Original post by bigoliver)
That's probably what i put then, i couldn't remember the figures but I'm sure I got that one right.

Thanks
Yeah i think i put 37.5% so thats positive lol!! Thanks x
20. | got 14 people got a B in the test
I got 24 was the pass mark on the cumulative frequency diagram question

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Updated: June 17, 2016
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