Difference between revisions of "ISSS608 2016-17 T1 Assign1 XU Qiuhui"

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== Data Modelling ==
 
== Data Modelling ==
 
The following are changes made before charting was done on Tableau: <TBD>
 
{| class="wikitable sortable"
 
|-
 
! Variable !! Changes Made and Rationale
 
|-
 
| Month || A new variable "Date" was created to parse the YYYY-MM format of the Month variable. The formula DATEPARSE('yyyy-MM',[Month]) was used in the calculated field.
 
|-
 
| Town || The variable is set to a State/Province geographical role for purpose of applying it to filled maps in the analysis.
 
|}
 
  
 
=Approaches=
 
=Approaches=

Revision as of 11:35, 29 August 2016

Abstract

<TBD>

Problem and Motivation

Data

Data Acquisition

Dataset Variables

Data Modelling

Approaches

General Colour Scheme for Charts

A consistent colour scheme was used in the charts to retain a sense of familiarity with the readers and reduce confusion. Several colour schemes was experimented for use across the charts. The final colour scheme selected deliberately used contrasting colours. Depending on the chart used, either 3 steps or 5 steps colours was used to allow readers to easily understand the concept of "high, medium, low" without further explanation.
Selected Colour Scheme

Data Analysis

Share of the resale public housing supply in 2015

Number of Resale Transactions by town

An overlay of the number of resale transactions by each HDB town or estate on the Singapore Map reveals that towns with the most resale flat transactions are from Jurong West, Tampines, Bedok, Sengkang and Woodlands. It can be observed that most of these areas are well built-up, and includes amenities such as shopping centres.

Visualisation rationale: <TBD>

2015 Resale Price vs Floor Square Area for Top 5 Towns Graph


2015 Resale Price vs Floor Square Area for Top 5 Towns Model


Share of Resale Transactions by Flat Type

Most popular: 4 Room, 3 Room.

Visualisation rationale: <TBD>

Share of Resale Transactions by Flat Type

Lower floors are sold more. House owners prefer to keep higher floors?

Visualisation rationale: <TBD>


Distribution of the resale public housing prices in 2015

2015 Public Housing Resale Market Median Prices by Town

No surprises here. Median prices are higher in mature estates and areas near the city centre such as Central area, Queenstown.

Visualisation rationale: Median avoids outliers. <TBD>

Top 10 Streets with Cheapest 4-Room Flats

Since primary flats sold are 4 Room, let's focus on 4 Room. Focus on families on a budget.

Visualisation rationale: <TBD>

Top 10 Streets with Most Expensive 4-Room Flats

No surprises on the estates.

Visualisation rationale: <TBD>




Comparison of patterns of the first-half of 2016 with the patterns of 2015

H1 2015 vs H1 2016: Transactions by Month

Visualisation rationale: <TBD>

H1 2015 vs H1 2016: Median Prices by Month

Visualisation rationale: <TBD>

Visualisation rationale: <TBD>


Infographics



Tools Utilised

  1. SAS JMP 12 – for initial data exploration and analysis
  2. Tableau 10.0 – for charting
  3. Microsoft Powerpoint – for Infographics layout



Results