Power Analysis (One-Way)

I calculated the power needed for a one-way classification this afternoon.  For 90% power, I needed a sample size of 49 for 7 populations.  This isn’t bad at all.  I’ll start my true sampling tomorrow or Tuesday afternoon.  I used a common standard deviation of about 50 in my analysis and a difference in 3 different treatments as residual estimates.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s