2016 Tokelau Census of Population and Dwellings

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Presentation transcript:

2016 Tokelau Census of Population and Dwellings Data and policy workshops Atafu (6 May), Nukunonu (7 May), Fakaofo (8 May), and Apia (11 May 2017) Module one: Introduction

Workshop team members Tokelau National Statistics Office Jaap Jasperse Mafa Mativa Statistics New Zealand Michael Berry Teresa Evans-Turner

Tokelau National Statistics Office staff: National Statistician Kele Lui (centre), Statistics Adviser Jaap (“iapi”) Jasperse, Statistics Officer Mafa Mativa (L)

Statistics New Zealand staff: Avril Macfarlane (L), Sophie Davies (Centre), Teresa Evans-Turner and Mike Berry (x2: in Apia just before Census, and in Atafu during May 2017 workshops)

The wider Tokelau Census team of Statistics New Zealand in Wellington

Tokelau and Statistics New Zealand Statistics New Zealand was approached to provide guidance and support for the 2006, 2011 and 2016 Tokelau censuses by Tokelau Government Ministry of Foreign Affairs and Trade (MFAT) Statistics NZ worked closely with Tokelau on the planning, management, operations, output, and publishing Staff secondment 2011-2014 and 2014-2016 plus ongoing support

Purpose To give back to those who gave us information To encourage general statistical literacy To work with policy makers, and dig deeper into the Tokelau census results To maximise the governments investment into census

What we will cover Module 1 – an introduction to statistics How we collect information How we publish information Basic statistics Module 2 – an overview of the census How it worked Who was covered What happens to the results

What we will cover Module 3 – census data overview Much about Tokelau Graphs and tables Where to find the information Module 4 – using data in policy Workshop style Quality of life in Tokelau and New Zealand

What we will cover Module 5 – Tokelau National Statistics Office Who are we and what do we plan to do over the next year How to contact us

Module one: An introduction to Statistics 2016 Tokelau Census Module one: An introduction to Statistics

What we will cover What are statistics Why use statistics How we collect statistics How we publish statistics

What are statistics? Statistics is the science of data the science that deals with the collection, classification, analysis, and interpretation of numerical facts or data. We deal in ‘official statistics’ Information collected, and published by the government of Tokelau Ongoing, not one off.

Why use statistics? Statistics provide information to help make evidence based decisions measure things at a point in time, and show change over time help us to track or monitor progress they provide official accountability to donors, financers, and the public are the cornerstone of good government

How do we collect statistics? Three main ways Census Complete coverage of your population Costly, slow, and can’t handle complex information Survey Covers a representative sample of your population Usually cheaper than census, but difficult to do in Tokelau Administrative Data Data collected during normal business activities eg financial records, amount of fuel imported If set up well and maintained properly, delivers good-quality data at low cost

The statistical process

The balancing act of official statistics Constraints: Desires: Continuity over time Relevance to today Burden on respondents Information needs Objectivity Responsiveness Administrative needs Statistical need Accuracy Timeliness Confidentiality Access to data

Garbage in, garbage out An English judge on the subject of Indian statistics: The government are very keen on amassing statistics. They collect them, add them, raise them to the n-th power, take the cube root and prepare wonderful diagrams. But you must never forget that every one of these figures comes in the first instance from the village watchman, who just puts down what he damn pleases. Quoted in Sir Josiah Stamp in Some Economic Matters in Modern Life

How we publish statistics Words Tables Graphs Summary statistics

How we publish statistics: Words On 18 October 2016, there were 1,285 people in Tokelau. This figure includes all people present in Tokelau on census night, including overseas visitors. People absent from Tokelau on census night were not included in this total.

How we publish statistics: Tables Atoll of usual residence De jure usually resident population Increase or decrease(-) 2011-2016 2011 2016 Number Percent Atafu 482 519 37 7.7 Fakaofo 490 484 -6 -1.2 Nukunonu 397 448 51 12.8 Samoa 42 48 6 14.3 Total 1,411 1,499 88 6.2

How we publish statistics: Graphs Figure 4.4 Source: 2016 Tokelau Census of Population and Dwellings

Who is this?

Florence Nightingale’s 1858 ‘Rose’

Napoleon’s march in 1812 by Charles Joseph Minard (1869)

How we publish statistics (cont.) Summary statistics Minimum Maximum Range = Max-Min Median = ‘middle’ value that divides the data into two halves Mode = most common value in the data Mean = average or balancing point of the data

Descriptive statistics Percentages (%) = a proportion of a total Percentage change = measure a change over time, eg population growth Response rates = how many people answered a particular question