Lesson 6 Different Combinations Practice Understanding
One hundred forty-four college freshmen were given a math placement exam with
Midpoint of interval
Frequency of interval
Make a histogram of the grouped data in the chart. (Note: The midpoint of each cell is given in the horizontal axis. The sides of the cells will match the score interval. Frequency is the vertical height.)
Locate the midpoint at the top of each cell in your histogram and connect each consecutive midpoint with straight line segments. The resulting figure is called a frequency polygon. If you smooth the line segments out into a smooth curve, you will create a frequency curve. Make a frequency curve on your histogram. It should look something like the figure.
Use the laws of logarithms to write each logarithmic expression as the sum or difference of logarithms. Express powers as factors.
Use the laws of logarithms to write each logarithmic expression as a single logarithm.