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Interpreting Data, SM-Bank 003

Margaret is preparing a report for her supervisor regarding costs for the recent staff development day.

Below is the graph Margaret prepared summarising the cost of the staff lunch for the day.

  1. What type of graph has been used to display the information?  (1 mark)
  2. Identify the two variables Margaret has used in this graph?  (1 mark)
  3. What is the cost of lunch per attendee?  (1 mark)
  4. If the total cost for the staff lunch was $85, how many attendees were there?  (1 mark)
  5. Briefly describe what happens to the total cost of the staff lunch as the number of attendees increases?  (1 mark)
Show Answers Only

a.    \(\text{Line graph}\)

b.    \(\text{Number of Attendees and Cost}\)

c.    \($5\)

d.    \(17\)

e.    \(\text{As the number of attendees increases the cost increases.}\)

Show Worked Solution

a.    \(\text{Line graph}\)

b.    \(\text{Number of Attendees and Cost}\)

c.    \(\text{From the graph, the cost per attendee}= $5\)

d.    \(\text{Number of Attendees}\)

\(=$85\ ÷\ 5\)

\(=17\)

e.    \(\text{As the number of attendees increases the cost increases.}\)