FF3618 – Computer Based Exam (10.30am-12.15pm)

http://161.142.92.104/ff3618/hipertensi.sav

1. Create a new variable BMI (Body Mass Index) from HEIGHT & WEIGHT. Calculate the following for BMI;

• Mean
• Mode
• Median
• Standard deviation

2. Create a new variable OBESCLAS (Classification of Obesity) from BMI. Use the following cutoff point;

• < 25 = Normal
• 25 till <30 = Overweight
• > 30 = Obese

Create a frequency table for OBESCLAS. Copy and paste the table into your Word file.

3. Conduct the appropriate statistical test to find any association between OBESCLAS and SYSTOLIC.

Copy and paste the appropriate tables/charts along with the interpretation into your Word file.

4. Assuming that both variables BMI & SYSTOLIC are normally distributed,

• conduct an appropriate statistical test to prove the association between the two variables.
• Demonstrate the association using the appropriate chart.

Copy and paste the chart and your answers into your Word file.

5. Assuming that the association in Q4 is significant, try to come out with a formula that will predict the systolic blood pressure based on the body mass index.

y = a + bx

Copy and paste the appropriate tables/charts along with the interpretation into your Word file.

Save your Word file using your matric number as its filename i.e. A20627.doc. Send it as an attachment via email to statsexam@gmail.com, using your matric number as its subject header. All answers must be sent to that email before 12.15 pm 22nd February 2013. No marks will be given for answers received after 12.15 pm 22nd February 2013.