data mining techniques - LSR Online

Understanding Perceptions of
Leicestershire Library Services
Sharon Pye
Leicestershire County Council
Tel: 0116 305 7413
Email: Sharon.Pye@leics.gov.uk

Place Survey
• National benchmark
% people very or fairly satisfied with…
National
East Midlands
Leicstershire
• Service benchmark
0% 20% 40% 60% 80% 100%
% people very or fairly satisfied with…
Local tips / household waste recycling centres
Libraries
Parks and open spaces
Local bus service
Sport / leisure facilities
Local transport information
Museums / galleries
Theatres / concert halls
0% 20% 40% 60% 80% 100%

Cross tabulation
Gender * Satisfaction
Crosstab
Satisfaction
Total
Satisfied neither Dissatisfied
Gender Male Count 2054 825 238 3117
% within Gender 65.9% 26.5% 7.6% 100.0%
% within Satisfaction 40.7% 51.5% 53.7% 44.0%
Std. Residual -3.5 4.5 3.1
Female Count 2991 778 205 3974
% within Gender 75.3% 19.6% 5.2% 100.0%
% within Satisfaction 59.3% 48.5% 46.3% 56.0%
Std. Residual 3.1 -4.0 -2.7
Total Count 5045 1603 443 7091
% within Gender 71.1% 22.6% 6.2% 100.0%
% within Satisfaction 100.0% 100.0% 100.0% 100.0%
Chi-Square Tests
Value
df
Asymp. Sig.
(2-sided)
Pearson Chi-Square 75.390 a 2 .000
Likelihood Ratio 75.052 2 .000
Linear-by-Linear Association 69.465 1 .000
N of Valid Cases 7091
a. 0 cells (.0%) have expected count less than 5. The minimum expected count is 194.73.

Who is satisfied?

CHAID
• Chi-squared Automatic Interaction Detector
• Decision tree technique, based upon cross
tabulations
• Used widely within the Marketing Sector to
target particular segments

Best Users
Which of these activities best describes what you are doing at present?
Full time employee; Unemployed;
Self employed; Full time education;
Doing something else
Retired; Permanently sick or disabled
Part time employee;
Looking after home
Children or not?
How is your health?
Children or not?
Yes
No
Good; Very good
Fair; Bad; Very bad
Yes
No

Summary
Is this analysis useful?
If the answer is yes,
ask for it.