Case Study - Experimental Design
A leading dental clinic with three well qualified dentists is seriously considering keeping in touch with its patients as also promoting it s business. Normally the clinic recommends half yearly check to all those who avail its services.
The clinic has got types of cards as shown below:
It is advisable to have a six monthly check up May I remind your that it is time for your to have a preventive dental examination ?
Please ring up the clinic for an early appointment.
As you know it is advisable for everyone to have a six monthly dental check up as a preventive measure. Don't forget that your teeth are a part of your looks. It is our endeavour not only to see your smiling face but to ensure that your teeth add grace to your looks. You are are requested to ring up the clinic for an early appointment.
The dental clinic has decided to undertake an experiment in this regard. There are four experimental groups:
a.Patient who visited the clinic in January were given card 1 ( to return in June) and were asked to fill it in their own handwriting:
b.Patients who vested the clinic in February were given card 2 ( to return in July) and were asked to fill it in their own handwriting:
c.Patients who vested the clinic in march received card 1 which was typed out ( to return in august) an d
d.Patients who visiting the clinic in April received card 2 which was typed out ( to return in September.)
a.Specify the typed of experimental design indicated in this case.
b.Evaluate this experimental design.
c.Can you improve this design ? if so suggest improvement .