Question

2. According to a Danish researcher, if you drop your average daily activity level by taking elevators instead of stairs, by parking your car in the closest space, or by never walking to run errands, you increase your risk of diabetes, heart disease, and premature death. The researcher studied two independent groups of healthy men that were randomly assigned into two different experiments (eight in the first group with an average age of 27 and an average body mass index (BMI) of 22.9, which is well within the normal range; and ten in the second group with an average age of 23.8 years and a BMI of 22.1). In addition to age and BMI, researchers also collected information such as number of steps per day (each group of men was fitted with pedometer), height, weight, identification number, and race. With the first group of men, the researchers asked that they reduce their daily activity (steps) by taking cars on short trips and elevators instead of stairs. The insulin levels were also measured for each group and the researchers found that with the reduced activity, insulin levels rose by nearly 60 percent after two weeks of inactivity, thus increasing the risk of diabetes and heart disease. However, the good news is that by increasing activity over a two-week period of time, one can begin to reduce his or her risk of diabetes and heart disease.(12 pts)
   

1. What type of experimental research design was employed in this study? Give reasons for your answer.
   
   

                                                  

2. Identify all the variables in this study as either quantitative or qualitative.
   
   
   

3. Of the variables that are quantitative, determine whether they are discrete or continuous.
   
   
   
   
   

4. Give the levels of measurement for these variables.
   

Answer 1

SOLUTION A: THIS IS QUASI EXPERIMENTAL STUDY. BECAUSE IT TRIES TO ESTABLISH CAUSAL EFFECT RELATIONSHIP BETWEEN INDEPENDENT VARIABLES AND DEPENDENT VARIABLE.

SOLUTION B AND C:: Height: QUANTITATIVE and CONTINOUS

Weight: QUANTITATIVEand CONTINOUS

Identification number:: QUALITATIVE

Race:: QUALITATIVE AND CATEGORICAL

Insulin level Quantitative and Continuous.

Walking steps : Quantitative and discrete

SOLUTION D: Height: RATIO LEVEL LEVEL OF MEASUREMENT.

Weight RATIO LEVEL LEVEL OF MEASUREMENT.

Identification number::NOMINAL LEVEL OF MEASUREMENT.

Race:: NOMINAL LEVEL OF MEASUREMENT.

Insulin level RATIO LEVEL OF MEASUREMENT.

Walking steps : INTERVAL LEVEL OF MEASUREMENT