The graph below is an ogive of scores on a math test. The vertical axis in an ogive is the cumulative relative frequency and can also be interpreted as a percentile. Use the graph to approximate the percentile rank of an individual whose test score is 45. O A. 60 В. 65 С. 19 Percentile Ranks of Math Test Scores O D. 14 100- 90- 80- 70- 60- 50- 40- 30- 20- 10- 04 0 10 20 30 40 50 60 70 80 90 100

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The graph below is an ogive of scores on a math test. The vertical axis in an ogive is the cumulative relative frequency and can also be interpreted as a percentile. Use the graph to approximate the percentile rank of an individual whose test score is 45.

**Explanation of the Graph:**
- **Title:** Percentile Ranks of Math Test Scores
- **Vertical Axis (Y-axis):** Percentiles (0 to 100)
- **Horizontal Axis (X-axis):** Math Test Scores (0 to 100)
- **Curve:** Starts at the origin (0,0), indicating cumulative frequency is 0 at a test score of 0. The curve rises steeply from a test score of around 30 and continues to rise until it flattens out near the top.

**Analysis:**
1. Locate the test score of 45 on the horizontal axis.
2. Draw a vertical line from the test score of 45 up to the curve.
3. From the point where the vertical line intersects the curve, draw a horizontal line to the vertical axis (percentile axis).

**Observed Result:** 
- Using the graph, the percentile rank corresponding to the test score of 45 approximates to 60.

**Multiple Choices:** 
- A. 60 (Correct Answer)
- B. 65
- C. 19
- D. 14
Transcribed Image Text:The graph below is an ogive of scores on a math test. The vertical axis in an ogive is the cumulative relative frequency and can also be interpreted as a percentile. Use the graph to approximate the percentile rank of an individual whose test score is 45. **Explanation of the Graph:** - **Title:** Percentile Ranks of Math Test Scores - **Vertical Axis (Y-axis):** Percentiles (0 to 100) - **Horizontal Axis (X-axis):** Math Test Scores (0 to 100) - **Curve:** Starts at the origin (0,0), indicating cumulative frequency is 0 at a test score of 0. The curve rises steeply from a test score of around 30 and continues to rise until it flattens out near the top. **Analysis:** 1. Locate the test score of 45 on the horizontal axis. 2. Draw a vertical line from the test score of 45 up to the curve. 3. From the point where the vertical line intersects the curve, draw a horizontal line to the vertical axis (percentile axis). **Observed Result:** - Using the graph, the percentile rank corresponding to the test score of 45 approximates to 60. **Multiple Choices:** - A. 60 (Correct Answer) - B. 65 - C. 19 - D. 14
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