General Flashcards
1
Q
Equation for equation of a line
A
y-y1=m(x-x1)
2
Q
Capture/Recapture
equation
A
number of 1st capture/population=amount tagged in 2nd capture/number of second capture
3
Q
Capture/Recapture
e.g. what is the population of fish if 20 fish are caught and tagged, then in the second capture, 48 and 3 are tagged.
A
20/x=3/48
x/20=48/3
x=48/3 x 20
x=320
4
Q
To find median
A
nov+1/2
5
Q
Class interval to find mean
A
f x x
```
frequency x class center
to get values
~~~
6
Q
Relative Error
A
absolute error/measurement
ae= 1/2 x precision
7
Q
Percentage Error
A
100 x relative error
8
Q
Percentage error example
250cm. what is her percentage error?
A
0.5/250 x 100
=0.2%
9
Q
Probability Tables
if z score is less than
A
number in table
10
Q
Probability Tables
if z score is more than
A
1- (number in table)
11
Q
Probability
or
A
+
12
Q
Probability
and
A
x
