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Descriptive Statistics & Measurement
Descriptive Statistics & Measurement
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Descriptive Statistics, Probability and Measures of Central Tendency
Flashcards
10 cards
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Questions
10
Answers
1
Your test is very good at identifying a person with the actual disease. This is known as:
Effect Size
Collinearity
Sensitivity
Specificity
2
There are 100 people tested for a disease and 90 people test positive. What is the sensitivity?
90%
10%
75%
80%
3
A person tests positive for a disease and confirmed to have the disease. This known as:
a true positive
a true negative
a false negative
a false positive
4
Your patient’s speed is a Z score of 2.3 & roommate’s speed is a Z score of 1.8. You expect:
Your patient is slower than her roommate
Your patient is faster than her roommate
2.3 times faster than the slowest patient on the unit
Unable to determine
5
The mean age is 12, normal distribution and SD=4. What is the median age for your subjects?
8-16 years
12 years
Unable to determine
Greater than 12 years
6
Which is an appropriate measure for studying the relationship of stress and health?
Median
Mode
Any central measures of tendency
Mean
7
Married/not married is the measured variable. Which measure is appropriate?
Mode
Any measure of central tendency
Median
Mean
8
An instrument has a Cronbach’s α of 0.74. What does this tell you about the instrument?
The internal consistency reliability of the instrument.
Content validity is appropriate in this instrument.
Any measures of central tendency would be appropriate.
It has a high level of validity.
9
What is the median on the following scores: 47%, 57%,57%, 52%,65%,66%,79%, 81% and 82%?
67%
62%
65%
57%
10
There are 100 people tested for a disease and 80 test negative. What is the specificity?
80%
20%
60%
90%
