Data Test Formulas & Statistics

Formula for Total Magnification (x)

μm (micrometres)

What is cell size measured in?

1000μm

1mm =

Formula for FOV (μm)

Formula for FOV at high mag (mm)

Formula for Size of One Cell (μm)

FOV / number of cells across diameter

Formula for Actual Size of One Cell (mm)

• direct relationship: variables both increase or decrease together.

• could look like: straight line moving up as the variables increase.

• inverse relationship: variables change in opposite directions (as one variable increases, the other decreases, and vice versa).

• could look like: straight line going down as the variables increase.

Difference between a direct and inverse relationship on a graph.

• p-values LESS than 0.05% are considered statistically significant, in which the null hypothesis should be rejected, and the alternative hypothesis accepted.

• p-values LESS than 0.001% are statistically highly significant.

• p-values GREATER than or EQUAL to 0.05% are not statistically significant, in which you would fail to reject the null hypothesis, and should not accept the alternative hypothesis.

Describe how you can identify whether a p-value is statistically significant or not.

• number between 0 and 1.

• helps determine the significance of the results.

• is used when a hypothesis test (used to test the validity (statistical significance) of a null hypothesis) is performed.

What is a p-value?

Assumes there is no statistical difference/relationship between the data sets - what is trying to be proved did not happen.

What is a null hypothesis?

Assumes there is a statistical difference/relationship between the data sets - the hypothesis trying to be proved.

What is an alternative hypothesis?