StatProf

Distributions

Z-Score/T-Score

TODO

Mean (`μ`):
Standard Deviation (`σ` or `s`):
Sample Size (`n`):		(Set `n` to 1 if unsure)
Value (`x`):
Z-Score:

Binomial Distribution Normal P-Value

TODO

Sample Size (`n`):
`p`:
x >		(`x >` may be blank)
x <		(`x <` may be blank)
Probability:
Mean (`μ`):
Standard deviation (`σ`):

Inverse Normal Distribution

TODO

Distribution:
Mean (`μ`):
Standard Deviation (`σ`):
Sample Size (`n`):		(Set `n` to 1 if unsure)
Proportion (`p`):
Z_x<
Z_x>
Z_x between:
Z_x outside:
x <
x >
x between:
x outside:

Normal Distribution P-Value

Calculates the area under the normal probability density function, representing a probability value.

Calculate the probability of randomly picking one value above, below, between, or outside of the given less than/greater than values, assuming the population is normally distributed.

If a sample size is provided, the standard deviation is divided by the square root of the sample size to calculate the probability of a random sample of the given sample size having a mean of the values below/above/between/outside what is specified in the x > and x < fields, assuming that the population is normally distributed or the sample size n ≥ 30, and the population standard deviation is assumed to be what is provided. If the population standard deviation is unknown or n < 30, you should use the Student T-Distribution.

Think of the x > and x < fields as min and max fields, respectively. Filling in the x > field will calculate the probability area from that point towards positive infinity. If both the greater than (min) and less than (max) fields are provided, the probability area either between or outside of the given points will be calculated.

Leave either x > or x < blank to perform a one-tailed probability calculation, but at least one of these fields must be provided.

Distribution:
Mean (`μ`):
Standard Deviation (`σ`):
Sample Size (`n`):		(Set `n` to 1 if unsure)
x >		(`x >` be blank)
x <		(`x <` be blank)
z_x> :
z_x< :
Probability: