CensusAtSchool » Sample

Cleaning data

Pip — Mon, 06 Sep 2010 21:59:56 +0000

In this activity students are given some background information about cleaning data and why it is important. They then undertake to clean data they are given themselves.

Helpful links:

From CensusAtSchool UK

http://www.censusatschool.org.uk/resources/data-handling/118-cleaning-up-your-data

Tell it like it is!

Joanne Woodward — Fri, 13 Jun 2008 01:03:44 +0000

One of the most important aspects of statistics is writing your conclusion. It can be compared to reading the last chapter in a book or writing your final paragraph in an essay.

What we can conclude from some data we are given?

A Tall Tale

Joanne Woodward — Fri, 13 Jun 2008 00:44:05 +0000

What would a graph of the heights of Year 10 NZ girls look like?
What stories do sampling distributions tell?

To tag or not to tag?

Joanne Woodward — Fri, 13 Jun 2008 00:27:51 +0000

It’s lunchtime and Jackson is looking forward to running around. Jackson made a quick survey of the friends he sits with while eating lunch to find out who wanted to play a game of tag with him. Jerry, Hemi and Tony were keen to join in. Daniel and Leo said they wanted to sit and play with their latest computer game. Harrison wanted to stand around and talk to some other friends. Based on his quick survey 4 out 7 (57%) of his group wanted to run around and play tag.

Jackson wonders whether 57% of New Zealand students ran around at lunchtime. Harrison thinks that Jackson’s quick survey is flawed if he wants information on all NZ students.

What proportion of all NZ students do each of the different activities at lunchtime?

8 Glasses per Day?

Joanne Woodward — Thu, 12 Jun 2008 04:14:30 +0000

Do you drink 8 glasses of water per day? This is the recommended number of glasses of water we should drink each day.

Do New Zealand students drink water regularly? Can you predict what a graph of a sample of students will look like?

This activity uses a question from the 2005 database, to view this data in data viewer you must select from the Census at School 2005 population.

Ready, Steady, Go

Joanne Woodward — Thu, 12 Jun 2008 00:28:22 +0000

Do Year 10 students have faster reaction times than Year 5 students?

Armspans

Julia Horring — Tue, 10 Jun 2008 23:05:51 +0000

Are the armspan lengths of 12-year-old boys and girls the same or different?

Chocolicious

Joanne Woodward — Tue, 29 Apr 2008 04:42:13 +0000

Investigate the claims of “Dodgycereal Limited” about their new brand of cereal called Chocolicious.