Maths Equations Flashcards
circumference of circle
2π r
area of a circle
π r^2
surface area of cuboid
2(bh+bl+hl)
volume of cuboid
hbl
mean
sum of all values / number of values
percentage change
new - old / old x 100
% yield
actual amount / theoretical amount x 100
% error (uncertainty)
2 x absolute uncertainty / quantity measured x 100
magnification
size of image / actual size of object
Rf value
distance moved by solute / distance moved by solvent
rate
change in quantity / time taken
surface area to volume ratio
surface area / volume
genetic biodiversity (proportion of polymorphic gene loci)
number of polymorphic gene loci / total number of loci
cardiac output
heart rate x stroke volume
respiratory quotient
CO2 produced / O2 consumed
microorganism population growth
N = N0 x 2^n
efficiency of biomass transfer
biomass transferred / biomass intake x 100
temperature coefficient (Q10)
R2/R1 (rate at T +10º / rate at Tº)
what do the symbols mean in
fo = observed value
fe = expected value
∑ = sum of
what do the symbols mean in standard deviation?
∑ = sum of
x = each value in the population
x(with line on top) = population mean
n = size of population
what do the letters mean in hardy-weinberg principle equation?
p^2 = dominant homozygous allele
q^2 = recessive homozygous allele
2pq = heterozygous allele
what do the symbols mean in simpson’s index equation
n = number of organisms in one species
N = number of organisms in the whole population
