connect a MCP9701?

Nodejs Code:

var m = require('mraa');
var a0 = new m.Aio(0);
a0.setBit(10);

console.log("reading analog input>>>");

/*setInterval(function() {
  readAnalog()
}, 1000);*/

function readAnalog() {
  var v_out;  var temp;  v_out = a0.read();  v_out*=.0048;  v_out*=1000;  temp=0.0512 * v_out -20.5128;  var tempinf = temp * (9 / 5) + 32;  console.log("c: " + temp.toFixed(1) + " f: " + tempinf.toFixed(1));
}

readAnalog();

I am using a MCP9701.  The MCP9701 is hooked to my Edison Arduino breakout board pin A0, 5v and ground.

The output temp is:

c: 25.4 f: 77.8

My room temp thermometer say 71.8 and the Edison is calculating my room temp as 77.8.  The temperature is definitely NOT 77.8 in my room.  What am I doing wrong and how do I get the proper temperature calculation using NodeJS?