Podcast
Questions and Answers
What type of study merely observes conditions of individuals in a population and records information without imposing treatments?
What type of study merely observes conditions of individuals in a population and records information without imposing treatments?
- Stratified study
- Experimental study
- Observational study (correct)
- Non-response study
In what situation would an observation be declared an outlier?
In what situation would an observation be declared an outlier?
- When it falls outside the overall pattern of the dataset (correct)
- When it is within 1.5 times the IQR of Q3
- When it is equal to the mean of the dataset
- When it is greater than Q1
What type of bias results when selected individuals in a survey either cannot be contacted or refuse to answer survey questions?
What type of bias results when selected individuals in a survey either cannot be contacted or refuse to answer survey questions?
- Non-response bias (correct)
- Selection bias
- Sampling bias
- Response bias
What type of distribution is a bell-shaped symmetric density curve used to model?
What type of distribution is a bell-shaped symmetric density curve used to model?
What graphical display of categorical data uses 'pies' to represent each category proportionally to its percentage?
What graphical display of categorical data uses 'pies' to represent each category proportionally to its percentage?
What term describes the response of patients to a treatment that has no physical effect?
What term describes the response of patients to a treatment that has no physical effect?
What is the location measure that has one-fourth or 25% of the data smaller than it?
What is the location measure that has one-fourth or 25% of the data smaller than it?
Which measure divides the ordered data set in half to find the median of the upper half of the data?
Which measure divides the ordered data set in half to find the median of the upper half of the data?
Which variable is defined by numerical observations like height or weight?
Which variable is defined by numerical observations like height or weight?
What method eliminates bias in assigning individuals to treatment groups by ensuring each unit has an equal probability of being assigned any treatment?
What method eliminates bias in assigning individuals to treatment groups by ensuring each unit has an equal probability of being assigned any treatment?
What does the range represent in statistics?
What does the range represent in statistics?
What is the interquartile range (IQR) used for?
What is the interquartile range (IQR) used for?
Why is replication important in experiments?
Why is replication important in experiments?
In a left-skewed density curve, what relationship exists between the mean and median?
In a left-skewed density curve, what relationship exists between the mean and median?
What does a multi-stage sample involve?
What does a multi-stage sample involve?
What is a lurking variable in a study?
What is a lurking variable in a study?
What is the function of the mean in a dataset?
What is the function of the mean in a dataset?
What does a lack of realism refer to in an experiment?
What does a lack of realism refer to in an experiment?
