maths skills Flashcards
metres-millimetres-micrometres-nanometres
x1000
percentage change
percentage change= (new quanity-original quantity)/original quantity x100
percentage yield
actual amount/theoretical amount x100
percentage uncertainty
maximum error/quantity measured x100
student’s t-test
compare the difference between two means and see if it significant
chi-squared
comparing the observed results to expected results, usually categorcial data
correlation co-efficient
used to find the strength of a correlation between two sets of continuous data
magnification
image size/actual size
pulmonary ventilation rate
tidal volume x breathing rate
cardiac output
stroke volume x heart rate
NPP
NPP = GPP - R
net production of consumers
N = I - (F+R)
hardy-weinberg
p+q=1
p2+2pq+q2=1
biodiversity
d= N(N-1)/Σn(n-1)
surface area of a cube
(lxl) x 6 sides