Week1 Assignment
1. For each of the following, indicate which is a variable and which is a constant: a. The number of minutes in an hour. Constant b. Patients’ systolic blood pressure. Variable c. Pi (π) – e.g., for finding the circumference of a circle. Constant d. College students’ level of depression variable
2. For each of the following research questions, identify the independent variable IV
“and” the dependent variable, DV:
Does a person’s age affect psychological adjustment following burn injury? IV: age DV: psychological adjustment
How do physically handicapped children differ from nonhandicapped children with respect to health concepts?
IV: Handicapped/nonhandicapped DV: health concepts
Do patients who administer their own pain medication have lower pain ratings than patients whose pain medication is administered by a nurse?
IV: Patients with pain DV: Pain ratings
Is the intracranial pressure of comatose patients affected by the presence of conversing visitors?
IV: Presence/absence of visitors conversing DV: the intracranial pressure
How does a bonnet compare to a stockinette in preventing heat loss in newborns?
IV: A bonnet compare to stockinette DV: heat loss
3. For each of the variables listed below, indicate which is discrete and which is continuous: a. Number of beds in a hospital. Discrete b. Height in inches continuous c. Number of pregnancies a woman has had. Discrete d. Amount of time spent sleeping continuous e. Body temperature measured in Fahrenheit continuous f. Self-esteem as measured on a 10-question scale Discrete g. Annual income continuous
4. For each of the variables listed below, indicate whether the measure is nominal, ordinal, interval, or ratio: a. Degrees, on the Celsius scale interval b. Student’s class rank ordinal c. Number of cigarettes smoked daily ratio d. Scores on an intelligence test ratio e. Religious preference nominal f. Military rank interval g. type of delivery
2. For each of the following research questions, identify the independent variable IV
“and” the dependent variable, DV:
Does a person’s age affect psychological adjustment following burn injury? IV: age DV: psychological adjustment
How do physically handicapped children differ from nonhandicapped children with respect to health concepts?
IV: Handicapped/nonhandicapped DV: health concepts
Do patients who administer their own pain medication have lower pain ratings than patients whose pain medication is administered by a nurse?
IV: Patients with pain DV: Pain ratings
Is the intracranial pressure of comatose patients affected by the presence of conversing visitors?
IV: Presence/absence of visitors conversing DV: the intracranial pressure
How does a bonnet compare to a stockinette in preventing heat loss in newborns?
IV: A bonnet compare to stockinette DV: heat loss
3. For each of the variables listed below, indicate which is discrete and which is continuous: a. Number of beds in a hospital. Discrete b. Height in inches continuous c. Number of pregnancies a woman has had. Discrete d. Amount of time spent sleeping continuous e. Body temperature measured in Fahrenheit continuous f. Self-esteem as measured on a 10-question scale Discrete g. Annual income continuous
4. For each of the variables listed below, indicate whether the measure is nominal, ordinal, interval, or ratio: a. Degrees, on the Celsius scale interval b. Student’s class rank ordinal c. Number of cigarettes smoked daily ratio d. Scores on an intelligence test ratio e. Religious preference nominal f. Military rank interval g. type of delivery