z Level of Measurement before after 33 Graphic Presentation of a Frequency

# Z level of measurement before after 33 graphic

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z ? Level of Measurement (before / after) 33 Graphic Presentation of a Frequency Distribution The three commonly used graphic forms are: z Histograms z Frequency polygons z Cumulative frequency distributions 34
Histogram HISTOGRAM A graph in which the classes are marked on the horizontal axis and the class frequencies on the vertical axis. The class frequencies are represented by the heights of the bars and the bars are drawn adjacent to each other. 34 Histogram Using Excel 36
Frequency Polygon z A frequency polygon also shows the shape of a distribution and is similar to a histogram. z It consists of line segments connecting the points formed by the intersections of the class midpoints and the class frequencies. 37 R.L.E. - Success in ENGH 1010 based on Grade in ENGH 0990
Histogram Versus Frequency Polygon z Both provide a quick picture of the main characteristics of the data (highs, lows, points of concentration, etc.) z The histogram has the advantage of depicting each class as a rectangle, with the height of the rectangular bar representing the number in each class. z The frequency polygon has an advantage over the histogram. It allows us to compare directly two or more frequency distributions. 38 Cumulative Frequency Distribution 41
Cumulative Frequency Distribution 42 \$0 \$50,000 \$100,000 \$150,000 \$200,000 \$250,000 \$300,000 \$350,000 \$400,000 Job A Job A 100000 150000 200000 250000 300000 350000 Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Your Salary After You Graduate
\$0 \$50,000 \$100,000 \$150,000 \$200,000 \$250,000 \$300,000 \$350,000 \$400,000 Job B Job B 130000 165000 200000 235000 270000 305000 Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Your Salary After You Graduate \$0 \$50,000 \$100,000 \$150,000 \$200,000 \$250,000 \$300,000 \$350,000 \$400,000 Job A Job B Job A 100000 150000 200000 250000 300000 350000 Job B 130000 165000 200000 235000 270000 305000 Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Your Salary After You Graduate
\$0 \$200,000 \$400,000 \$600,000 \$800,000 \$1,000,000 \$1,200,000 \$1,400,000 Job A Job B Job A 100000 250000 450000 700000 1000000 1350000 Job B 130000 295000 495000 730000 1000000 1305000 Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Your Salary After You Graduate R.L.E. - UVU Course Sections % Full
R.L.E. - UVU Course Enrollment Compared to Prior Spring Term R.L.E. - Remedial Placement of New Freshmen at UVU

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• Spring '11
• Leany
• Frequency, Frequency distribution, Bar chart, Histogram, Summary statistics