Question 1

What is the most complete description of statistics?

Accepted Answer

The collection and summarising of data from the world around us.

Answer

Doing a survey of your mates.

Answer

Drawing bar graphs.

Answer

Counting cars of different colour.

Question 2

To find out which music NZ teenage girls prefer, what is the population for your investigation?

Accepted Answer

All the teenage girls in NZ.

Answer

About 4 million currently.

Answer

All the girls in your school.

Answer

The number of teenage girls in NZ.

Question 3

What is the statistical Enquiry Cycle also known as?

Accepted Answer

PPDAC

Answer

CADPP

Answer

PACPD

Answer

DACPP

Question 4

Which action belongs to Defining the Problem in PPDAC?

Accepted Answer

Study the given multivariate data set.

Answer

Check that the samples are big enough.

Answer

Infer whether the differences are happening back in the populations.

Answer

Sort the data into tables.

Question 5

Which action belongs to Planning the Investigation in PPDAC?

Accepted Answer

Describe how the variable of interest will be measured.

Answer

Calculate measures of centre and spread for the samples.

Answer

Summarise the findings.

Answer

Describe the variable of interest.

Question 6

Which action belongs to the Data part in PPDAC?

Accepted Answer

Clean the data.

Answer

Summarise the findings.

Answer

Write an investigative question.

Answer

Draw a variety of graphs.

Question 7

What is part of the Conclusion part of the PPDAC cycle?

Accepted Answer

Make an inference about the population.

Answer

Describe the two populations that will be compared.

Answer

Find the median.

Answer

Do a survey.

Question 8

True or false: Different samples will give different results.

Accepted Answer

True

Answer

False

Question 9

What is a sample?

Accepted Answer

A subset of the population that you will get data from.

Answer

A question in the survey.

Answer

Data from just one person out of the data you collected.

Answer

Everyone or everything in the population.

Question 10

How many people or things do you need in your sample for the results to really mean anything?

Accepted Answer

30

Answer

100

Answer

5000

Answer

10

Question 11

What measures do you need to create a box and whisker plot?

Accepted Answer

Minimum, lower quartile, median, upper quartile, maximum.

Answer

Range and standard deviation.

Answer

Mean, median, mode.

Question 12

What does Multivariate Statistics mean?

Accepted Answer

Dealing with data that gives you several variables based on the same sample.

Answer

Dealing with data that only has one variable.

Answer

Dealing with data that has no more than two variables.

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