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Box-Plots and 5-Number Summary, SM-Bank 016

Ellyse recorded the number of wickets she took in the first seven games of the cricket season, which are as follows:

\(3, \ 5, \ 0, \ 8, \ 1, \ 2, \ 2 \)

  1. Complete the 5-number summary table of Ellyse's results below.   (2 marks)

\begin{array} {|c|c|c|c|c|}
\hline
\rule{0pt}{2.5ex} \ \text{Min} \ \rule[-1ex]{0pt}{0pt} &\ \ \text{Q}_1 \ \ \ &\ \ \text{Q}_2 \ \ \ &\ \ \text{Q}_3 \ \ \ & \  \text{Max} \ \\
\hline
\rule{0pt}{2.5ex}   \rule[-1ex]{0pt}{0pt} &  &  &  &  \\
\hline
\end{array}

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  1. Draw a box plot, using the number line below for reference, that displays Ellyse's results.   (2 marks)
     

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  1. Describe the skew of Ellyse's results.   (1 mark)

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Show Answers Only

i.    \(\text{Ordering the data:}\ 0, \ 1, \ 2, \ 2, \ 3, \ 5, \ 8\)

\begin{array} {|c|c|c|c|c|}
\hline
\rule{0pt}{2.5ex} \ \text{Min} \ \rule[-1ex]{0pt}{0pt} &\ \ \text{Q}_1 \ \ \ &\ \ \text{Q}_2 \ \ \ &\ \ \text{Q}_3 \ \ \ & \  \text{Max} \ \\
\hline
\rule{0pt}{2.5ex} 0  \rule[-1ex]{0pt}{0pt} & 1 & 2 & 5 & 8 \\
\hline
\end{array}

ii.   
     

iii.   \(\text{Positively skewed}\)

Show Worked Solution

i.    \(\text{Ordering the data:}\ 0, \ 1, \ 2, \ 2, \ 3, \ 5, \ 8\)

\begin{array} {|c|c|c|c|c|}
\hline
\rule{0pt}{2.5ex} \ \text{Min} \ \rule[-1ex]{0pt}{0pt} &\ \ \text{Q}_1 \ \ \ &\ \ \text{Q}_2 \ \ \ &\ \ \text{Q}_3 \ \ \ & \  \text{Max} \ \\
\hline
\rule{0pt}{2.5ex} 0  \rule[-1ex]{0pt}{0pt} & 1 & 2 & 5 & 8 \\
\hline
\end{array}

ii.   
     

iii.   \(\text{Positively skewed}\)

Filed Under: Box Plots and 5-Number Summary Tagged With: num-title-ct-corea, smc-5021-10-5-number (odd values), smc-5021-70-Skew, smc-5021-75-Draw box plot

Box Plots and 5-Number Summary, SM-Bank 015

Eli sat 22 Maths quizzes throughout year 8 and her results were recorded in the 5-number summary below.

\begin{array} {|c|c|c|c|c|}
\hline
\rule{0pt}{2.5ex} \ \text{Min} \ \rule[-1ex]{0pt}{0pt} &\ \ \text{Q}_1 \ \ \ &\ \ \text{Q}_2 \ \ \ &\ \ \text{Q}_3 \ \ \ & \  \text{Max} \ \\
\hline
\rule{0pt}{2.5ex}  30 \rule[-1ex]{0pt}{0pt} & 50 & 60 & 70 & 80 \\
\hline
\end{array}

  1. Using the number line below as reference, draw a box plot that displays Eli's results.   (2 marks)
     

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  1. Describe the skew of Eli's results.   (1 mark)

    --- 1 WORK AREA LINES (style=lined) ---

Show Answers Only

i.    
       

ii.    \(\text{Negatively skewed (slightly)}\)

Show Worked Solution

i.    
       

ii.    \(\text{Negatively skewed (slightly)}\)

Filed Under: Box Plots and 5-Number Summary Tagged With: num-title-ct-corea, smc-5021-50-Box plot (single), smc-5021-70-Skew, smc-5021-75-Draw box plot

Box Plots and 5-Number Summary, SM-Bank 013

Terry and Kim each sat twenty class tests. Terry’s results on the tests are displayed in the box plot shown in part (i).

  1. Kim’s  5-number summary for the tests is  67,  69,  71,  73,  75.

     

    Draw a box plot to display Kim’s results below that of Terry’s results.   (1 mark)
     
       

  2. What percentage of Terry’s results were below 69?     (1 mark)

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  3. Describe the skew of Kim's results.   (1 mark)

    --- 1 WORK AREA LINES (style=lined) ---

Show Answers Only
i.    

ii.  `text(50%)`
 

iii.  `text{By inspection of box plot: Evenly skewed}`

Show Worked Solution
i. 

 
ii.
  `text(50%)`
 

iii.  `text{By inspection of box plot: Evenly skewed}`

Filed Under: Box Plots and 5-Number Summary Tagged With: num-title-ct-corea, smc-5021-60-Box plots (parallel), smc-5021-70-Skew, smc-5021-75-Draw box plot

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