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

NOTE: Not all answers are yet correct. Please leave any correct answers below.

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]

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)

Question about Card "A"
4 (3)

(edited 7 years ago)

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Reply 1

bigoliver

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

(edited 7 years ago)

Reply 2

bigoliver

Not sure of the question number but the answer to the question about "A" cards was 4

(edited 7 years ago)

Reply 3

bigoliver

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.

Reply 4

NatalieT123

Can anyone remember what they put for the animals in the pie chart question? And the percentage?

Reply 5

bigoliver

I think this Probability question about the odds of getting different coloured apples was one of the harder questions, here is my working out

Reply 6

bigoliver

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

Reply 7

bigoliver

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

Reply 8

revisionbud

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

Reply 9

bigoliver

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

(edited 7 years ago)

Reply 10

revisionbud

Question 2) Ratio
64:36
32:18
16:9

Reply 11

bigoliver

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

(edited 7 years ago)

Reply 12

bigoliver

Original post by revisionbud

Question 2) Ratio
64:36
32:18
16:9

I got 16:9 too, thanks

Reply 13

NatalieT123

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)

Question about Card "A"
4 (3)

Which was the histogram q??? Im worried i missed a page?!?