GCSE Maths Cumulative Frequency Curves exam questions. This video is suitable for higher tier students only.
Keywords: Cumulative frequency, frequency, Data, grouped data, upper class bound, median, interquartile range, IQR, quartiles, percentiles, estimated mean, box plots, plot, cumulative frequency curve
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Question list:
► Higher Tier only questions
0:00:00 – Intro
0:00:58 – Q15 – Find interquartile range, look up values
0:07:02 – Q12 – Find median, read off frequencies, calculate estimated mean
0:14:29 – Q13 – Find median and interquartile range, find percentile
0:19:44 – Q15 – Find median and interquartile, find percentile, compare two data sets
0:29:05 – Q15 – Look up values, find median, compare cumulative frequency curves
0:34:21 – Q15 – Work out cumulative frequency, plot curve, look up values
0:40:16 – Q16 – Find median, look up values
0:44:03 – Q16 – Look up values, find median and quartiles, draw box plot
0:50:00 – Q17 – Look up values
0:53:55 – Q17 – Find median, look up values
0:57:36 – Q17 – Work out cumulative frequency, locate Q1, plot curve, look up values
1:03:49 – Q18 – Work out cumulative frequency, plot curve, look up values
1:07:19 – Q18 – Work out cumulative frequency, plot curve, look up values
1:11:11 – Q19 – Work out cumulative frequency, plot curve, find percentiles
1:15:39 – Q19 – Find IQR, look up values, compare curve with a box plot
1:23:05 – Q22 – Work out cumulative frequency, plot curve, find IQR
1:28:20 – Outro
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The solutions to these practice papers are my own and have not been provided or approved by OCR or AQA. There may be other methods of solution possible than the ones I have shown here.
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