Biology maths Flashcards
circumference of circle =
2𝜋r
area of circle =
𝜋r^2
percentage change =
new quantity - original quantity
________________________ x100
original quantity
percentage yield =
actual amount
_______________ x100
theoretical amount
percentage error =
number of readings x absolute uncertainty
_________________________________ x100
quantity measured
magnification =
size of image
___________
actual size
Rf =
distance moved by solute
_____________________
distance moved by solvent
rate =
change in quantity
_______________
time
surface area to volume ratio =
surface area
__________
volume
proportion of polymorphic gene loci =
number of polymorphic gene loci
__________________________
total number of loci
cardiac output =
heart rate x stroke volume
RQ =
CO2 produced
____________
O2 consumed
microorganism population growth
N =
N0 x 2^n
efficiency of biomass transfers =
biomass transferred
________________ x100
biomass intake
Q10 =
rate 2
_____
rate 1
What is Spearman’s rank used for?
to determine the correlation between two sets of data (similarities and differences between them)
-1 = -ve correlation
0 = no correlation
1 = +ve correlation
What is standard deviation used for?
to look at the spread of data around the mean
-the larger the value, the more different the values are to the mean
What is t-test used for?
to determine the significance of the difference between two means
What is chi-squared used for?
to compare observed and expected results
Which statistical test should be used to determine correlation between two sets of data?
Spearman’s rank
Which statistical test should be used to look at the spread of data around the mean?
standard deviation
Which statistical test should be used to determine the significance of the difference between two means?
t-test
Which statistical test should be used to compare observed and expected results?
chi-squared
