# Thread: statistical test for significant differences

1. ## statistical test for significant differences

hello
ive got two numbers 70.5 and 71.5 and need to know what statistical test to use to know if theres a significant difference between the two.
any help much appriechiated
thanks

2. Significant difference about what? Without any information, it does not make sense. The difference ie 1 is very small with respect to 1000 and very large with respect to 0.0001. So you have to specify the background.

3. these are two leaves from a bush, the leaves are at 70.5 and 71.5 mm from identical bushes grown at the same time and i need to know if theres any significant difference between there lengths .with a hypothosis of there is no difference
thanks

4. Originally Posted by mike--1988
these are two leaves from a bush, the leaves are at 70.5 and 71.5 mm from identical bushes grown at the same time and i need to know if theres any significant difference between there lengths .with a hypothosis of there is no difference
thanks
Are you looking at the mean of samples? If so use a hypothesis test using the normal tables