Statistics, STD2 S1 2016 HSC 27c
Statistics, STD2 S1 2015 HSC 29d
Data from 200 recent house sales are grouped into class intervals and a cumulative frequency histogram is drawn.
- Use the graph to estimate the median house price. (1 mark)
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- By completing the table, calculate the mean house price. (3 marks)
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Statistics, STD2 S1 2007 HSC 22 MC
Statistics, STD2 S1 2006 HSC 24c
The heights of the 60 members of a choir were recorded. These results were grouped and then displayed as a cumulative frequency histogram and polygon.
The shortest person in the choir is 140 cm and the tallest is 190 cm.
Draw an accurate box-and-whisker plot to represent the data. (3 marks)
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Statistics, STD2 S1 2005 HSC 9 MC
Statistics, STD2 S1 2014 HSC 26e
Statistics, STD2 S1 2010 HSC 26b
A new shopping centre has opened near a primary school. A survey is conducted to determine the number of motor vehicles that pass the school each afternoon between 2.30 pm and 4.00 pm.
The results for 60 days have been recorded in the table and are displayed in the cumulative frequency histogram.
- Find the value of Χ in the table. (1 mark)
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- On the cumulative frequency histogram above, draw a cumulative frequency polygon (ogive) for this data. (1 mark)
- Use your graph to determine the median. Show, by drawing lines on your graph, how you arrived at your answer. (1 mark)
- Prior to the opening of the new shopping centre, the median number of motor vehicles passing the school between 2.30 pm and 4.00 pm was 57 vehicles per day.
What problem could arise from the change in the median number of motor vehicles passing the school before and after the opening of the new shopping centre?
Briefly recommend a solution to this problem. (2 marks)
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Statistics, STD2 S1 2013 HSC 27c
A retailer has collected data on the number of televisions that he sold each week in 2012.
He grouped the data into classes and displayed the data using a cumulative frequency histogram and polygon (ogive).
- Use the cumulative frequency polygon to determine the interquartile range. (2 marks)
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- Oscar said that the retailer sold 300 televisions in 6 of the weeks in 2012.
Is he correct? Give a reason for your answer. (1 mark)
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