PR2 W3-W4

Question 1

examines the effects of an intervention on an outcome of interest

Answer 1

Intervention research

Question 2

the goal is to prevent a negative outcome from occurring

Answer 2

Prevention research

Question 3

the goal is often to support specific tenets of
theoretical paradigms.

Answer 3

Classic laboratory experimentation

Question 4

look at the relationships between risk factors or characteristics of patients and their likelihood of getting a particular disease

Answer 4

analytical observational studies

Question 5

two types of intervention studies

Answer 5

1. randomized controlled trials
2. non-randomized or quasi-experimental trials

Question 6

is considered to be the gold standard of clinical research because it is the only known way to avoid selection and confounding biases

Answer 6

Randomized controlled trial

Question 7

4 steps to collect high-quality data that is relevant to your purposes

Answer 7

Define the aim of your research
Choose your data collection method
Plan your data collection procedure
Collect the data

Question 8

is the science of collecting, organizing, presenting, analyzing, and interpreting data to assist in making more effective decisions, especially in the context of quantitative research

Answer 8

statistics

Question 9

two categories of statistics

Answer 9

Descriptive Statistics
Inferential Statistics

Question 10

this statistics methods of organizing, summarizing, and presenting data in an informative way
e.g. via various charts, tables, and infographics

Answer 10

Descriptive Statistics

Question 11

this statistics The methods used to estimate a property of a population on the basis of a
sample e.g. T-Test, Z-Test, ANOVA, Regression Analysis, Factor Analysis, Cluster Analysis

Answer 11

Inferential Statistics

Question 12

is the most commonly used measure of central tendency

Answer 12

mean

Question 13

is the value that occurs most frequently

Answer 13

mode

Question 14

is the middle value when the data are arranged in
ascending or descending order

Answer 14

median

Question 15

Measures of Variability:

Answer 15

Range, Variance, Standard Deviation, Coefficient of Variation

Question 16

measures the spread of the data

Answer 16

range

Question 17

The difference between the mean and an observed value is called the deviation from
the mean

Answer 17

variance

Question 18

square root of the variance

Answer 18

Standard Deviation

Question 19

is the ratio of the standard deviation to the mean expressed as
percentage, and it is a unitless measure of relative variability

Answer 19

Coefficient of variation

Question 20

is simply a statement that something is true.

Answer 20

hypothesis

Question 21

is a procedure in making decisions based on a sample evidence or probability theory used
to determine whether the hypothesis is accepted or rejected

Answer 21

hypothesis testing