To show percentages that equal 100, it is best to use a:

To show percentages that equal 100, it is best to use a:
 
  A) line graph. B) bar graph. C) circle graph. D) scatter graph.

---

Graphs that use vertical or horizontal bars to represent numerical data are called:
 
  A) vertical graphs. B) bar graphs.
  C) scatter graphs. D) line graphs.

---

Any factor that can change or be present in varying amounts is called:
 
  A) a quantity. B) a variable. C) a proportion. D) data.

---

Most nations throughout the world use the ________ system of measurement.
 
  A) mass B) graphic C) metric D) decimal

---

The process used to determine the approximate value of a number is called:
 
  A) estimation. B) identification.
  C) multiplication. D) calculation.