Aussie Maths & Science Teachers: Save your time with SmarterEd
Pedro has 180 students in his year at school.
He surveys 30 students at random and asks them their favourite subject at school.
This column graph shows the results of the survey.
Which is the best estimate for the total number of students in Pedro's year whose favourite subject is English?
| 6 | 18 | 24 | 36 | 60 |
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Spiro spins the arrow of this spinner 40 times.
He records the number of times the arrow lands on each number.
Which table records the most likely results?
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`text(Landing on 1 or 5 is approximately one-third chance)`
`text(which is 13 times.)`
`text(Landing on 4 is expected to occur slightly less often)`
`text(than landing on 2 or 3.)`
Phil throws darts at a board split into 4 sections and records which section they hit.
Based on Phil's data, what is the probability that a dart he throws will land in section 2 or 3?
Express your answer as a percentage rounded to the nearest tenth.
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Petunia picks a marble from a bag and records its colour before placing it back in the bag.
She repeats this 36 times.
Her results are in the table below.
Using the table, what is the probability that the next marble Petunia picks will be red?
| `1/3` | `1/6` | `1/12` | `1/4` |
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Nev spins the arrow 50 times.
Which table is most likely to show the result?
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`text(One strategy:)`
`X\ text{should be worth around 40% (20 spins),}`
`=>\ text(Eliminate the first and last options.)`
`text(The other relative sizes require the answer to be:)`
Wally asked all Year 9 students at his school what their favourite sport was.
He recorded the results in a table.
Which sport did 4 out of every 10 Year 9 students choose as their favourite?
| `text(Water polo)` | `text(Tennis)` | `text(Cricket)` | `text(Surfing)` |
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A die in the shape of a rectangular prism has 6 faces with 1 to 6 dots.
Brian throws the die 1000 times to test it and records the outcomes.
What is the probability of throwing a six based on Brian's results?
| `1/6` | `1/40` | `6/25` | `12/500` |
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Jon spins each pointer 50 times.
Each time he added the numbers that the pointers landed on.
His results are shown below.
\begin{array} {|c|c|c|c|c|c|}
\hline
\rule{0pt}{2.5ex}\textbf{Sum of numbers}\rule[-1ex]{0pt}{0pt} & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & \textbf{Total}\\
\hline
\rule{0pt}{2.5ex}\textbf{Number of spins}\rule[-1ex]{0pt}{0pt} & 1 & 2 & 3 & 6 & 8 & 9 & 7 & 5 & 4 & 4 & 1 & \textbf{50} \\
\hline
\end{array}
What percentage of the spins resulted in a sum of 9?
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The table below shows all the people at Angus' birthday party.
What fraction of the children at the party are female?
| `20/45` | `20/60` | `45/60` | `20/100` | `45/100` |
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Arun flips an unbiased coin 200 times.
Which result is most likely?
| `20\ text(tails)` | `98\ text(tails)` | `108\ text(tails)` | `196\ text(tails)` |
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A group of 125 people were asked if they wear a watch or not.
This table shows the results.
A man was selected at random.
What is the probability that he wears a watch?
| `0.20` | `0.28` | `0.32` | `0.42` |
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