Statistics Review Questions with 100% Correct Answers
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Course
Introduction to Statistics
Institution
Introduction To Statistics
What does the Standard error tell us about the sample? - Standard error of the sample mean is an estimate of how far the sample mean is likely to be from the population mean
True or false: Stratified is a type sampling for non-probability - false: it is a type of probability sampling
The sm...
Statistics Review Questions with 100%
Correct Answers
What does the Standard error tell us about the sample? - ✅✅ Standard error of the
sample mean is an estimate of how far the sample mean is likely to be from the
population mean
True or false: Stratified is a type sampling for non-probability - ✅✅ false: it is a
type of probability sampling
The smallest difference a patient would recognize as being beneficial to his or her
condition, resulting in a change in the management of the patient without cost or
side effects is known as the _______________________ - ✅✅ Minimal clinically
important difference (MCID)
Which normality test should be used for a sample data set of (<50 cases)? - ✅✅
Shapiro-Wilks test
You are an OT student interested in measuring the abstract concept of depression
among psychiatric outpatients in New York City. You administer the Beck
Depression Inventory to evaluate for quantifying levels of depression, the test is
said to have what kind of validity? - ✅✅ Construct validity
How are measures of central tendency defined? - ✅✅ "An added way to make
sense of your quantitative data by looking to see how the overall data points
cluster"
A study presented with a true score variance of 3.67 and an error variance of 0.33.
However, upon a second trial, the error variance decreased to .22. How does this
effect reliability? - ✅✅ The reliability increases because as the error variance
decreases, the closer the reliability coefficient will approach
Does qualitative research fall under descriptive study or inferential study? - ✅✅
descriptive study
What are the boundaries of the confidence interval based on? - ✅✅ The sample
mean and its standard error
, True or False: Inductive Reasoning: "top-down" logic. Uses the process of
reasoning from one or more general statements to reach a logically certain
conclusion. - ✅✅ False
Three general assumptions of a Parametric Test - ✅✅ "Samples are randomly
drawn from populations with ""normal distributions;
True or False: According to SPIN, if a test has a high specificity (ie: 90%) and you
complete that test and the results are positive, you should rule in that diagnosis? -
✅✅ True
How do you define and measure bias? - ✅✅ Reliability and validity.
The median, mode and mean are all measures of ________________? - ✅✅
Central Tendency
Stephanie is a research student who is using the Kolmogorov-Smirnov test to
determine if her research sample is normally distributed. This would mean
Stephanie is conducting research with a sample data set of how many cases? - ✅✅
greater than 50 Cases (>50)
What is the correct clinical action to take when a negative test exhibits high
sensitivity? - ✅✅ Rule out the suspected condition.
Occupational therapy students in the senior class at LIU took a pediatrics quiz in
the beginning of the summer semester and then took the same quiz in the middle of
the summer semester. The two sets of scores are then compared. What kind of test
would this be considered? - ✅✅ Test-retest reliability
What is an independent t-test with unequal variances? - ✅✅ The variances are
statistically significant from each other
"A measure of whether the data is peaked or flat relative to a normal distribution" -
✅✅ Kurtosis
____________________ is a common statistical measure of how much variability
there is within a dataset that is expressed in terms of the same units as the dataset
in question. - ✅✅ Standard Deviation
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