$\text { Construct an } \bar { x } \text { chart. }$

question 6

Essay

$\text { Construct an } \bar { x } \text { chart. }$
Control Chart Constants

A machine is supposed to fill boxes to a weight of 50 pounds. Every 30 minutes a sample of four boxes is tested; the results are given below.

---

Definitions:

Diode

A semiconductor device that allows current to flow in one direction only, used in electronics for rectification and signaling.

Relay

Any of a number of devices that receives a signal and then effects an action. In vehicle electrical circuits, relays are used to allow a small current circuit to control a large current circuit such as in a starter relay. Also known as a pilot.

Transistor

A semiconductor device used to amplify or switch electronic signals and electrical power, fundamental in modern electronic circuits.