Equations

Question 1

association test equation

Answer 1

r\/n-2/1-r(2)

Question 2

regression equation

Answer 2

b(o) -/+ b(1) x

Question 3

mean

Answer 3

3x/n

Question 4

median

Answer 4

1/2 (1+n)

Question 5

standard deviation

Answer 5

3x(-)- x/n-1

Question 6

variance

Answer 6

3x(-)- x/n (then square root)

Question 7

decay equation

Answer 7

c= c x exp (-at)

Question 8

growth equation

Answer 8

c = c (1+r)(n)

Question 9

rate of increase

Answer 9

r x n (1-n/k)

Question 10

hydronium conc/acid to pH

Answer 10

-log(1x10(-7))

Question 11

ph to hydronium conc

Answer 11

inverse log then reverse number, log=10(-7.40)

Question 12

equilibrium constant

Answer 12

conc of products/conc of reactants

Question 13

ka equation

Answer 13

(h30 x conc products)/conc of reactants

Question 14

pka

Answer 14

-log(ka)

Question 15

kw

Answer 15

hydrogen ions x hydroxide ions

Question 16

pressure/volume equation

Answer 16

press x volume=constant x temp x number of moles

Question 17

atmosphere equation

Answer 17

p(o)xexp (-z/h), p(o)xexp (mgh/kt)

Question 18

gas dissociation equation

Answer 18

e= h x f

Question 19

phlanks constant

Answer 19

6.63 x 10(-34)

Question 20

coulombs law

Answer 20

1/4pie(o)/q1xq2/r(2)

Question 21

current equation

Answer 21

charge/time

Question 22

ohms law

Answer 22

voltage=current x resistance

Question 23

power equation

Answer 23

current x voltage