analysing the shape of the distribution

which distribution does my data best match?

which distribution does my data best match?

which distribution does my data best match?

We need to think about how we collect the data, what question we ask, what answers people might give, and how to record the answers.

We also need to think about how many people to ask. This is called ___ ___.

There are several ways to collect data:

When you ask people some questions.

• experiment

• census

• survey

There are several ways to collect data:

this is where you ask every person in the country a bunch of questions.

• experiment

• census

• survey

There are several ways to collect data:

this is when you test or measure people or objects.

• experiment

• census

• survey

The census is the official count of how many people and dwellings there are in New Zealand. We do this every ___ years

• 3

• 4

• 5

• 10

Think about the answers. A measurement (e.g. height) or a count (e.g. how many people have a cell phone in our class) they are called _________,

• Numerical data

• Categorical data

if they are a group (e.g. ethnic or cultural group) they are called ____.

• Numerical data

• Categorical data