問題一覧
1
What is the determination of whether or not a study actually represents what it intends to represent?
Validity
2
Which is the plan researchers make to increase the likelihood of results being valid and reliable?
Experimental Design
3
Which type of variable has a true zero?
Ratio
4
Which is a failure in sampling that prevents the samples used in a study from actually representing the larger population being considered?
Bias
5
Which type of bias occurs when individuals incorrectly remember past events?
Recall Bias
6
Interventional studies are commonly known as experiments.
True
7
Which type of study divides individuals into two groups?
Case-control
8
Which type of study identified groups based on their exposure to the explanatory variable?
Cohort
9
Which type of study only observes individuals at one particular point in time?
Cross-sectional
10
Which group receives a placebo instead of a treatment?
Control
11
Which type of experiment do neither the participants nor the administrators of the treatment know who is in which group?
Double-blind
12
Only randomized samples can truly be representative of the larger population.
True
13
Which is the average, or the sum, of the data divided by the number of data points?
Mean
14
Which is the value in the data set that occurs the MOST frequently?
Mode
15
Which measures how much the probability curve of a given data set has been distorted from normally distributed data?
Skewness
16
Which Is the default or accepted assumption about the relationship between the explanatory and response variable at the start of the study?
Null hypothesis
17
Which type of error is also known as a false positive?
Type I error
18
Which type of test requires normally distributed data?
Parametric
19
Which type of test compares means by calculating a single value?
T-test
20
Which type of test uses data sets of two normally distributed samples with equal variances?
Unpaired t-test