Maths skills workbook stuff Flashcards
Circumference of a circle
Pi x Diameter
Surface area of a cube or cuboid
2 (AB) + 2(AC) + 2 (BC)
A,B,C are side lengths
Surface area of a sphere
4 x Pi x Radius squared
surface area of a cylinder
2 x Pi x r^2 +( pi x diameter x height)
Volume of a cube or cubeoid
A x B x C
Volume of sphere
4/3 x Pi x r^3
volume of a cylinder
Pi x r^2 x h
equation for magnification
Image size= real size x magnification
equation for pH
pH=-log^10[H*]
H= the conc of the hydrogen ion in moles per litre
Equation for Pulmonary ventilation rate
PVR= TIdal volume x breathing rate
Equation for cardiac output
Stroke volume x Heart rate
Species diversity index
D=N(N-1)/sum of n(n-1)
N=the grandtotal of all species sampled
n=the number of each individual species sampled
Lincoln index
N=s^1 x s^2/R
S1=total captured and marked
s2=total number recaptured
R=number of marked animals captured
Equation for efficiency of energy transfer
Energy transferred/Energy intake x 100
Equation for Net Primary Production
NPP = GPP - R
GPP= gross primary production
R= energy loss in respiration
Net production by consumers
N= I -(F+R)
I= potential energy in ingested food
F= energy lost in faeces and urine
R= energy lostin respiration
When are chi tests used
When data is categoric
When is a t test used
WHen comparing the mean values of two sets of data
When is a correlation Co effcient used
When examing an assocation between two sets of data
What test will be used when frequencies are involved
Chi Squared test
What test will be used when looking for assocaitons
SPearmans rank correlation
WHat test will be used when looking for the diffefrnece in means
T-Test
