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James wants to give a sample of 30 students using the following methods:

Which of James' methods will produce a genuine random sample?

1

James wants to give a sample of 30 students using the following methods:

Which of James' methods will produce a genuine random sample?

1

James wants to give a sample of 30 students using the following methods:

Which of James' methods will produce a genuine random sample?

1

Stephanie wants to select a sample of people using the following methods:

Which of Stephanie's methods will produce a non-biased sample?

1

Stephanie wants to select a sample of people using the following methods:

Which of Stephanie's methods will produce a non-biased sample?

1

The table shows information about which rides people went on, each only going on one ride.

The Big Dipper | The Log Flume | Alien Adventure | |

Male | |||

Female |

The theme park takes a sample of of these students.

The sample is stratified by gender and ride.

Work out the number of people in the sample who are and went on ''.

The sample is stratified by gender and ride.

Work out the number of people in the sample who are and went on ''.

2

The table shows information about which rides people went on, each only going on one ride.

The Big Dipper | The Log Flume | Alien Adventure | |

Male | |||

Female |

The theme park takes a sample of of these students.

The sample is stratified by gender and ride.

Work out the number of people in the sample who are and went on ''.

The sample is stratified by gender and ride.

Work out the number of people in the sample who are and went on ''.

2

Ragnal's Trout Sanctuary are trying to find out how many trout there are in a lake.

They catch a sample of trout and tag them.They then release these trout.

The next day they catch another sample of trout and find of these trout had been tagged the previous day.

They catch a sample of trout and tag them.They then release these trout.

The next day they catch another sample of trout and find of these trout had been tagged the previous day.

Estimate the total number of trout in the lake.

3

Ragnal's Trout Sanctuary are trying to find out how many trout there are in a lake.

They catch a sample of trout and tag them.They then release these trout.

The next day they catch another sample of trout and find of these trout had been tagged the previous day.

They catch a sample of trout and tag them.They then release these trout.

The next day they catch another sample of trout and find of these trout had been tagged the previous day.

Estimate the total number of trout in the lake.

3