Exam (elaborations)
Statistics revision paper 1
- Module
- Statistics
- Institution
- PEARSON (PEARSON)
It is a statistics module of Access to higher education diploma in computer science and maths. Its a revision paper 1 of HE.
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STATISTICS - REVISION PAPER 1Table 1
Mark 0-15 16-39 40-59 60-79 80-100
Frequency 5 9 20 15 4
Table 2
Mark 1-10 11-20 21-30 31-40 41-50 51-60
Frequency 2 4 7 12 10 5
Table 3
Mark 0-4 4-8 8-10 10-16 16-20
Frequency 3 8 17 6 4
Table 4
x 4 7 6 7 5 7 5 6
y 6 5 8 8 5 9 6 8
TASKS
1 Using the data in table 1 find the:
a) Mean
b) Variance
c) Standard deviation
2 Using the data in table 2 draw the cumulative frequency curve and find the:
a) Median
b) Lower quartile
c) Upper quartile
3 Using the data in table 3 construct a histogram and find the:
a) Mode
b) Median
4 Using the data in table 4 calculate the:
a) Product moment correlation coefficient
b) Rank correlation coefficient
ANSWERS (calculations given to 2 decimal places)
1a 50.52
b 484.57
c 22.01
2a 35.9
b 26.2
c 44.5
3a 8.93
b 8.94
4a 0.48
b 0.46
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