Moving Average filter's incorrect output.

I want to to design a simple moving average filter with window size 5.

Since, filter order = 1+window size (hence, order kept 6)

I did this is filterDesigner -

My data's last 5 fields are -> 34.2700, 34.2700, 34.2700, 34.2800, 34.2800

Simple Moving Average output SHOULD BE = 34.274 by (adding all above/5)

dsp.MovingAverage() also gives 34.2740 but later I need to use fvtool to plot the filter, but dsp.MovingAverage() doesn't return a filter object.

But, I'm getting = 34.2716

Is my above filter design not of a Simple moving average filter?

How to resolve this?

Thank you.