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Interpreting Data, SM-Bank 020 MC

This graph shows the number of cockatoos in a gum tree at 15 minute intervals over 4 hours.
 

 
At which time were the lowest number of cockatoos in the gum tree?

  1. 3:00
  2. 3:15
  3. 3:45
  4. 4:00
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\(C\)

Show Worked Solution

\(\text{The lowest data point is one interval before 4:00 pm.}\)

\(\therefore\ \text{The lowest number were in the tree at 3:45 pm.}\)

\(\Rightarrow C\)