lecture 1 Flashcards
chem/phy (35 cards)
1
Q
accuracy
A
how close the average is to the true value
2
Q
precision
A
how close the values are to each other
3
Q
standard deviation
A
measure of precision
4
Q
peta
A
quadrillion
5
Q
tera
A
trillion
6
Q
giga
A
billion
7
Q
mega
A
million
8
Q
kilo
A
thousand
9
Q
hecto
A
hundred
10
Q
deca
A
ten
11
Q
deci
A
tenth
12
Q
centi
A
hundredth
13
Q
milli
A
thousandth
14
Q
micro
A
millionth
15
Q
nano
A
billionth
16
Q
nominal
A
no intrinsic order
17
Q
ordinal
A
have order
18
Q
dichotomous
A
only two values
19
Q
interval
A
numeric value and is measured
20
Q
ratio
A
like interval, but value of 0 means nothing
21
Q
population
A
a group from which the date is collected
22
Q
sample
A
subset of population
23
Q
variable
A
differences in quality or quantity from one value to another
24
Q
categorial variables
A
variables with discrete or qualitative values
25
continuous variables
variables that can be measured along a continuum
26
mean
sum of values/ #of values
27
median
middle value
28
mode
most common value
29
range
highest - lowest
30
interquartile range
75th percentile -25th percentile
31
standard deviation
measure the amount of variation or dispersion of a set of data values
32
standard error of the mean
standard deviation/square root of N
33
selection bias
biased sampling of population
34
measurement bias/systematic bias
poor measurement technique
35
analysis bias
favors one conclusion over another
