Maths in bio 🧮

Question 1

Formula for standard deviation:

Answer 1

√∑(x - x-)2/n-1

∑= the sum (total) of
x = value measured
x = mean value
n = total number of values in the sample

Question 2

What is student t test?

Answer 2

Used to compare the means of data values of 2 populations.

Data collected must be normally distributed –> enough data collected to calculate reliable mean.

Null hypothesis to predict no significant difference between specified populations.

Question 3

Equation for student t-test?

Question 4

What is Spearman’s rank correlation coefficient?

Answer 4

used to consider relationship between 2 sets of data.

Question 5

What are the types of correlation in Spearman’s rank?

Answer 5

No correlation: no relationship between data

Positive correlation: as 1 set of data increases in value, other set of data also increases in value

Negative correlation: as 1 set of data increases in value, other set of data decreases in value.