Biostatistics Exam Review
1. If you feed two groups of children low-calcium and high calcium diets and then measure DMF.
What is the dependent variable?: DMF
2. If you feed two groups of children low-calcium and high calcium diets and then measure DMF.
What is the independent variable?: calcium
3. Evaluation of different toothbrushes; Powered vs Manual and then mea- sured amount of plaque present.
What is the dependent variable?: plaque score
4. Evaluation of different toothbrushes; Powered vs Manual and then mea- sured amount of plaque present.
What is the independent variable?: toothbrush
5. The following are examples of what type of variable?
- Weight
- Age
- # of pets
- # of siblings
- Time to finish a test: continuous
6. The following are examples of what type of variable?
- Dental index
- Decayed Missing and Filled Teeth: discrete
7. The following are examples of what type of variable?
- Gender
- Color of eyes
- Rating of health (fair, poor): categorical
8. The following are examples of which scale of measurement?
- Gender
- Race
- Student
- Teacher: nominal
9. The following are examples of which scale of measurement?
- Education level
- Shades of whiteness of teeth
1/
10
, Biostatistics Exam Review
- Much improvement, some improvement, little improvement
2/
10
1. If you feed two groups of children low-calcium and high calcium diets and then measure DMF.
What is the dependent variable?: DMF
2. If you feed two groups of children low-calcium and high calcium diets and then measure DMF.
What is the independent variable?: calcium
3. Evaluation of different toothbrushes; Powered vs Manual and then mea- sured amount of plaque present.
What is the dependent variable?: plaque score
4. Evaluation of different toothbrushes; Powered vs Manual and then mea- sured amount of plaque present.
What is the independent variable?: toothbrush
5. The following are examples of what type of variable?
- Weight
- Age
- # of pets
- # of siblings
- Time to finish a test: continuous
6. The following are examples of what type of variable?
- Dental index
- Decayed Missing and Filled Teeth: discrete
7. The following are examples of what type of variable?
- Gender
- Color of eyes
- Rating of health (fair, poor): categorical
8. The following are examples of which scale of measurement?
- Gender
- Race
- Student
- Teacher: nominal
9. The following are examples of which scale of measurement?
- Education level
- Shades of whiteness of teeth
1/
10
, Biostatistics Exam Review
- Much improvement, some improvement, little improvement
2/
10
