If the Average Range Is 4

question 105

Essay

If the average range is 4.0 inches and the sample size is 18, compute the upper and lower limits for an R chart.

---

Definitions:

Streak Plate

A laboratory method used to identify the color of a mineral in powdered form by rubbing it on a porcelain tile.

Magnetic

Pertaining to or exhibiting magnetism; having the ability to attract iron and certain other materials.

Igneous

Pertains to rocks or minerals that have solidified from molten or partially molten material, indicative of volcanic or magmatic origin.

Metamorphic

Rock that has undergone transformation through heat, pressure, or chemically active fluids, altering its original composition or structure.