Practical skills Flashcards
1
Q
Standard deviation
A
The standard deviation tells you how much the values in a single sample vary. It’s a measure of the spread of values about the mean.
2
Q
Units
A
1cm = 10mm
There are 1000 millimeters in 1 meter (1000mm = 1m)
There are 1000 micrometers in 1 millimeter (1000um = 1mm)
There are 1000 nanometers in 1 micrometer (1000nm in 1um)
3
Q
Magnification calculation formula
A
magnification = image size/real size
4
Q
% Change formula
A
((Final value - initial value) / initial value) x 100
