SmarterEd

Aussie Maths & Science Teachers: Save your time with SmarterEd

Statistics, STD2 S1 2022 HSC 15 MC

The cumulative frequency graph shows the distribution of the number of movie downloads made by 100 people in one month.
 

Which box-plot best represents the same data as displayed in the cumulative frequency graph?
 

Show Answers Only

Show Worked Solution


♦♦♦ Mean mark 30%.

Statistics, STD2 S1 2016 HSC 27c

The heights of 400 students were measured. The results are displayed in this cumulative frequency polygon.
 

2ug-2016-hsc-q27_2

 
Use the polygon to estimate the interquartile range.  (2 marks)

Show Answers Only

Show Worked Solution

♦ Mean mark 46%.

2ug-2016-hsc-q27c-answer

 
 

Statistics, STD2 S1 2005 HSC 9 MC

A set of data is represented by the cumulative frequency histogram and ogive.
 

2UG-2005-9MC
 

What is the best approximation for the interquartile range for this set of data?

  1.    25
  2.    30
  3.    35
  4.    40
Show Answers Only

Show Worked Solution

2UG-2005-9MC Answer

 
 

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).
 

2013 27c

  1. Use the cumulative frequency polygon to determine the interquartile range.  (2 marks)

  2. 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)

Show Answers Only

  3.  

  4.  

Show Worked Solution

i. 

♦♦♦ Mean mark 13%
COMMENT: Finding median and quartile values from cumulative frequency charts is an important skill that is often examined.

 
 

 

ii. 

♦♦♦ This question proved a beast, with a mean mark of 1%. Toughest question in the 2013 exam!