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The school canteen wishes to conduct a survey to find out the preferred sandwich fillings of students so they can ensure they are catering to the likes of the students.
Which of the following survey options would provide the most useful information.
\(D\)
\(\text{Considering each option:}\)
| A. | \(\text{Not representative of the whole school population.}\) |
| B. | \(\text{Not necessary to survey students who do not use the canteen.}\) |
| C. | \(\text{Not representative of the whole school population.}\) |
| D. | \(\text{Students from each year who use the canteen are surveyed,}\) |
| \(\text{so representative of the whole population of canteen users. }\checkmark \) |
\(\Rightarrow D\)
Which of the following would be best conducted as a sample?
\(D\)
\(\text{Considering each option:}\)
\(\text{A. You could measure the all players }\longrightarrow\ \text{Census}\)
\(\text{B. This information would be available from ticket sales }\longrightarrow\ \text{Census}\)
\(\text{C. Could be determined exactly with a stocktake of remaining bottles }\longrightarrow\ \text{Census}\)
\(\text{D. It would not be possible to interview every household to determine popularity }\longrightarrow\ \text{Sample}\)
\(\Rightarrow D\)
Explain the difference between a census and a sample. (2 marks)
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\(\text{A census surveys the whole population.}\)
\(\text{A sample surveys a section of the population.}\)
\(\text{A census surveys the whole population.}\)
\(\text{A sample surveys a section of the population.}\)
Explain why a door-to-door survey conducted between the hours of 9 am and 3 pm on a Tuesday may not give results representative of the population. (2 marks)
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\(\text{It would not be representative of the whole community.}\)
\(\text{For example day workers and school children would not be included.}\)
\(\text{It would not be representative of the whole community.}\)
\(\text{For example day workers and school children would not be included.}\)
The local council is researching possible uses for a large area of land close to an established housing development.
One of the options for the land is a football stadium with a crowd capacity of \(30\ 000\) people.
The council is considering surveying people as they exit an existing football stadium in a neighbouring town.
Give a reason why this survey may not provide reliable data. (2 marks)
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Min is writing a report regarding the capacity of dams in NSW during 2023 projecting in to 2024. He wishes to include rainfall data for the previous 12 months in each of the catchment areas.
Should Min use primary or secondary sources to obtain this informaiton? Give a reason for your answer. (2 marks)
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\(\text{Secondary Source data}\)
\(\text{Reason: See worked example}\)
\(\text{Secondary source data.}\)
\(\text{It would not be possible for Min to collect this information}\)
\(\text{himself so he would therefore need to rely on already existing}\)
\(\text{secondary source data.}\)
Michael is conducting a survey to determine whether his clients are happy with the customer service they receive at his restaurant.
Should Michael use primary or secondary source data for his survey? Give a reason for your answer. (2 marks)
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\(\text{Primary Source data}\)
\(\text{Reason: See worked example}\)
\(\text{Primary source data.}\)
\(\text{Michael would survey his actual customers}\)
\(\text{to obtain their opinions and is therefore using}\)
\(\text{primary source data.}\)
A high school has 100 students in each year group, Year 7 to Year 12. A survey is to be conducted to determine the average number of text messages sent per month by students at the school.
Which of the following would provide the most representative sample for this survey?
`C`
`text(The best sample would have an equal amount)`
`text(of people in each year randomly selected.)`
`=>\ C`