undaries. Draw a box plot to show all that information. 18, 14, 27, 35, 7, 16, 21, 20, 28, 19
undaries. Draw a box plot to show all that information. 18, 14, 27, 35, 7, 16, 21, 20, 28, 19
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:### Understanding the 5-Number Summary and Box Plot
**Problem Statement:**
Calculate the 5-number summary of this numerical distribution, and also the Interquartile Range (IQR) and outlier boundaries. Draw a box plot to show all that information.
#### Given Data:
18, 14, 27, 35, 7, 16, 21, 20, 28, 19
**Steps to Solve:**
#### 1. Arrange the Data in Ascending Order:
7, 14, 16, 18, 19, 20, 21, 27, 28, 35
#### 2. Calculate the 5-Number Summary:
- **Minimum (Min):** The smallest number in the data set.
- Min = 7
- **First Quartile (Q1):** The median of the first half of the data.
- Q1 = 16
- **Median (Q2):** The middle number of the data set.
- Q2 = 19.5 (average of 19 and 20)
- **Third Quartile (Q3):** The median of the second half of the data.
- Q3 = 27
- **Maximum (Max):** The largest number in the data set.
- Max = 35
- **5-Number Summary:** 7, 16, 19.5, 27, 35
#### 3. Calculate the Interquartile Range (IQR):
- **IQR = Q3 - Q1**
- IQR = 27 - 16 = 11
#### 4. Determine the Outlier Boundaries:
- **Lower Bound:**
- \( Q1 - 1.5 \times IQR \)
- Lower Bound = \( 16 - 1.5 \times 11 = 16 - 16.5 = -0.5 \)
- **Upper Bound:**
- \( Q3 + 1.5 \times IQR \)
- Upper Bound = \( 27 + 1.5 \times 11 = 27 + 16.5 = 43.5 \)
#### 5. Draw the Box Plot:
- **Box Plot Elements:**
- **Whiskers:** Extend from Min to Q1 and from Q3 to Max.
-
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