Statistical Investigation Process

The first step in the statistical investigation process is to identify a problem that could be answered with the use of data and to pose (or formulate) a ...

Once a question has been posed, the next step in the statistical investigation process is to ...

• collect data

• organise and display data

• summarise and analyse data

• interpret and communicate results

A ...................... is when data is collected from every member of the target population.

A ...................... is when data is collected from a subset of the target population.

The most important consideration when selecting a sample from the population, is to ensure that the sample is ................... of the population

• representative

• all

• biased

• random

To ensure that a sample is representative of the population, a ................... sampling technique should be used to select the sample.

• representative

• coordinated

• biased

• random

Which of the following is the best definition of a biased sample?

• A sample that accurately reflects the target population.

• A sample where the data collected will lean toward a certain result.

• A sample that is selected randomly from the target population.

• A sample where results are taken from each strata (or group) within the target population.

Data that has been collected by the person or group that will use the data is called .......................... data.

The biggest advantage of using a census is that ......

• The data must reflect the population because it includes all members.

• It is quicker to collect data using a census.

• It is easier to collect data using a census.

• It is cheaper to collect data using a census.

Which of the following is not an advantage of using a sample, rather than a census?

• The data must reflect the population because it includes all members.

• It is quicker to collect data using a census.

• It is easier to collect data using a census.

• It is cheaper to collect data using a census.