ANOVA analysis of two site management types

[dantheman87]

HI. This is my first post so if it's in the wrong category etc. please let me know.

Some background to my question:
I have titrated biomass samples which came from either a conventionally farmed field or one with special treatment to find their raw protein content. I want to be able to say whether biomass from conventionally farmed fields or specially treated sites has more protein.

I believe an ANOVA analysis is appropriate and, for that. If so, would it be a one-sided analysis?

Looking forward to your thoughts.

Daniel

 

[Miner]

You appear to have only two levels (control and treatment), so you can use a 2-sample t-test. A 1-way ANOVA is typically used for 3 or more levels. Since your alternate hypothesis is that a treated field has more protein, this would be a 1-sided test.

 

[dantheman87]

You appear to have only two levels (control and treatment), so you can use a 2-sample t-test. A 1-way ANOVA is typically used for 3 or more levels. Since your alternate hypothesis is that a treated field has more protein, this would be a 1-sided test.

Thank you! I am now going to try it out in R

 

[katxt]

I want to be able to say whether biomass from conventionally farmed fields or specially treated sites has more protein.

Two sided perhaps?

 

[Miner]

Two sided perhaps?

2-sided would be used if the OP was looking for any difference, but in this case the OP was looking for a greater than difference, which is 1-sided.

 

[katxt]

I read it as whether either conventional or special has more protein which is two sided.