Post on 30-Dec-2015
description
Obj: Read and interpret data displayed in a histogram
Warm-up
Obj: Read and interpret data displayed in a histogram
Histograms – 1.4
Objective
• Read and interpret data displayed in a histogram.
Obj: Read and interpret data displayed in a histogram
Obj: Read and interpret data displayed in a histogram
Bar Graphs Vs. Histograms
• Topics vs. numbers• Bars don’t touch vs. bars do touch
Obj: Read and interpret data displayed in a histogram
Definition
• Bin Width – The # you count by on the x-axis.
• Insert pic
Obj: Read and interpret data displayed in a histogram
Example 1• How many values
are in the data set?
• What is the bin width?
• How many trees are under 70 feet high?
• How many trees are between 70 and 80 feet high?
Obj: Read and interpret data displayed in a histogram
Example 2
• Draw a histogram of the data below using 5 bins:
(1, 6, 8, 8, 10, 11, 12, 13, 20, 22, 22, 25)
• Now make a histogram using only 3 bins:
Obj: Read and interpret data displayed in a histogram
Example 3• How many students took
the test?
• How many students scored less than 60%?
• How many students scored over 60% but less than 80%?
Obj: Read and interpret data displayed in a histogram
Homework
• 1.4 worksheet• Problems 1, 2, 4a