The following table provides summary statistics for contract job vacancies with a requirement for CHAID skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited CHAID over the 3 months to 30 March 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Chi-squared Automatic Interaction Detection (CHAID)
UK
3 months to
30 Mar 2017
Same period 2016 Same period 2015
Rank 594 639 615
Rank change year-on-year +45 -24  
Contract jobs citing CHAID 6 1 10
As % of all contract IT jobs advertised in the UK 0.013% 0.002% 0.019%
As % of the Processes & Methodologies category 0.016% 0.002% 0.023%
Number of daily rates quoted 4 1 4
Median daily rate £444 £700 £424
Median daily rate % change year-on-year -36.60% +65.19%  
90% offered a daily rate of more than £373 £700 £389
10% offered a daily rate of more than £471 £700 £429
UK excluding London median daily rate £463 £700 £426
% change year-on-year -33.92% +64.22%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

CHAID is in the process and methodology skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies with a requirement for process and methodology skills.

Contract Process & Methodology Skills
UK
Contract job vacancies with a requirement for process and methodology skills 37817 44820 42796
As % of all contract IT job vacancies advertised in the UK 83.06% 82.80% 79.70%
Number of daily rates quoted 25004 29451 26544
Median daily rate £450 £430 £418
Median daily rate % change year-on-year +4.65% +2.99%  
90% offered a daily rate of more than £300 £300 £275
10% offered a daily rate of more than £600 £600 £575
UK excluding London median daily rate £410 £400 £396
% change year-on-year +2.50% +1.01%  
Number of hourly rates quoted 954 1102 1235
Median hourly rate £35.00 £37.50 £28.19
Median hourly rate % change year-on-year -6.66% +33.02%  
90% offered a hourly rate of more than £13.00 £13.00 £12.10
10% offered a hourly rate of more than £52.50 £55.00 £49.50
UK excluding London median hourly rate £35.75 £38.00 £30.00
% change year-on-year -5.92% +26.66%  

CHAID
Job Vacancy Trend

The job posting trend of jobs advertised citing CHAID as a proportion of all contract or permanent IT jobs with a match in the Processes & Methodologies category.

Job vacancy trend for CHAID in the UK

CHAID
Contractor Daily Rate Trend

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing CHAID.

Contractor daily rate trend for CHAID in the UK

CHAID
Contractor Hourly Rate Trend

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing CHAID.

Contractor hourly rate trend for CHAID in the UK

CHAID
Top 5 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CHAID within the UK over the 3 months to 30 March 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +53 6 £444 -36.60% 2
South East - 5 £463 -
Havant - 4 £469 -
Hampshire - 4 £469 -
London - 1 £351 - 1

For the 6 months to 30 March 2017, IT contractor jobs citing CHAID also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads with a requirement for CHAID.

1 9 (90.00%) Analytics
2 7 (70.00%) Statistical Modelling
2 7 (70.00%) Time Series Analysis
2 7 (70.00%) SQL
2 7 (70.00%) Data Mining
2 7 (70.00%) Logistic Regression
3 6 (60.00%) Statistics
3 6 (60.00%) SPSS
3 6 (60.00%) Linear Regression
4 5 (50.00%) Mathematics
4 5 (50.00%) Computer Science
4 5 (50.00%) Monte Carlo Method
4 5 (50.00%) R
4 5 (50.00%) ANOVA
4 5 (50.00%) ETL
4 5 (50.00%) Operations Research
4 5 (50.00%) Marketing
4 5 (50.00%) Neural Network
4 5 (50.00%) Economics
5 4 (40.00%) SAS
5 4 (40.00%) CRISP-DM
5 4 (40.00%) Tableau
6 3 (30.00%) Big Data
6 3 (30.00%) Data Visualisation
6 3 (30.00%) Multivariate Testing
6 3 (30.00%) Visualisation
6 3 (30.00%) SPSS Modeler
6 3 (30.00%) A/B Testing
6 3 (30.00%) Business Intelligence
6 3 (30.00%) MS PowerPoint

CHAID
Co-occurring IT Skills by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 4 (40.00%) SAS
Applications
1 6 (60.00%) SPSS
2 3 (30.00%) MS PowerPoint
2 3 (30.00%) SPSS Modeler
3 2 (20.00%) MS Excel
3 2 (20.00%) MS Office
3 2 (20.00%) Spreadsheet
Cloud Services
1 2 (20.00%) Google Analytics
Database & Business Intelligence
1 7 (70.00%) Data Mining
2 3 (30.00%) Big Data
3 2 (20.00%) SQL Server
4 1 (10.00%) Base SAS
4 1 (10.00%) Relational Database
4 1 (10.00%) SAS Enterprise Guide
General
1 5 (50.00%) Marketing
2 1 (10.00%) Banking
2 1 (10.00%) Finance
2 1 (10.00%) Telecoms
Job Titles
1 6 (60.00%) Data Scientist
2 5 (50.00%) Analyst
3 3 (30.00%) Data Analyst
4 2 (20.00%) Insight Analyst
5 1 (10.00%) Data Modeller
5 1 (10.00%) SAS Analyst
5 1 (10.00%) SAS Data Analyst
5 1 (10.00%) SQL Analyst
5 1 (10.00%) SQL Data Analyst
5 1 (10.00%) SQL Server Analyst
5 1 (10.00%) Statistical Analyst
Miscellaneous
1 5 (50.00%) Computer Science
2 2 (20.00%) Analytical Skills
3 1 (10.00%) Credit Risk
3 1 (10.00%) Data Structures
3 1 (10.00%) Digital Media
Processes & Methodologies
1 9 (90.00%) Analytics
2 7 (70.00%) Logistic Regression
2 7 (70.00%) Statistical Modelling
2 7 (70.00%) Time Series Analysis
3 6 (60.00%) Linear Regression
3 6 (60.00%) Statistics
4 5 (50.00%) ANOVA
4 5 (50.00%) Economics
4 5 (50.00%) ETL
4 5 (50.00%) Mathematics
4 5 (50.00%) Monte Carlo Method
4 5 (50.00%) Neural Network
4 5 (50.00%) Operations Research
5 4 (40.00%) CRISP-DM
6 3 (30.00%) A/B Testing
6 3 (30.00%) Business Intelligence
6 3 (30.00%) Data Visualisation
6 3 (30.00%) Multivariate Testing
6 3 (30.00%) Visualisation
7 2 (20.00%) Data Analysis
Programming Languages
1 7 (70.00%) SQL
2 5 (50.00%) R
3 2 (20.00%) T-SQL
3 2 (20.00%) VBA
Quality Assurance & Compliance
1 1 (10.00%) Actionable Recommendations
Vendors
1 4 (40.00%) Tableau
2 2 (20.00%) Google
2 2 (20.00%) Microsoft
3 1 (10.00%) Adobe
3 1 (10.00%) Coremetrics
3 1 (10.00%) IBM