1.1.4 Basic Principles and Techniques (Laboratory statistics, Gaussian curve)) Flashcards
Most commonly used
a. Mean
b. Median
c. Mode
a
It corresponds to the center of Gaussian curve
a. Mean
b. Median
c. Mode
a
midpoint of a data set after the values have been rank-ordered
a. Mean
b. Median
c. Mode
b
most frequently occurring value in a data set
a. Mean
b. Median
c. Mode
c
Distribution of data points around the mean
a. Standard deviation
b. Variance
c. Coefficient of Variation
d. Range
Standard deviation
Standard Deviation is the ___________ of Variance
Square root
Variance is simply the _______ of standard deviation
Square
S^2
What is the formula for variation?
Simply remove the square root in Standard deviation
s^2 = (Summation (Mean - x)^2 ) / n -1
What is the formula for Coeffcient of Variation?
CV = (S/Mean) x 100
S = Standard deviation
Coefficient of Variation is the best indicator of ____________
a. Accuracy
b. Precision
c. Sensitivity
d. Specificity
b
CV is Directly proportional to Precision
T or F
F
If CV is High then Precision is Low
The rule of thumb for Coefficient variation is less than?
a. 10%
b. 20%
c. 5%
a
Formula for Range?
Highest value - Lowest Value
It is unreliable when there are outliers
a. Standard deviation
b. Variance
c. Coefficient of Variation
d. Range
d
A data set that is display in Gaussian Curve is shape as?
Bell curve
