To calculate the 5-number summary of the given dataset \(5, 6, 6, 7, 7, 8, 8, 8, 9, 9, 14, 16\), we need to determine the following values:
- Minimum value: The smallest number in the dataset.
- Maximum value: The largest number in the dataset.
- Median: The middle value of the dataset.
- Quartile 1 (Q1): The median of the first half of the dataset.
- Quartile 3 (Q3): The median of the second half of the dataset.
- Interquartile Range (IQR): The difference between Q3 and Q1.
Step 1: Identify the minimum and maximum values
- Minimum value: 5
- Maximum value: 16
Step 2: Find the median Since there are 12 numbers (even count), the median will be the average of the 6th and 7th numbers in the sorted dataset.
- The 6th number is 8 and the 7th number is also 8.
- Median = \((8 + 8) / 2 = 8\)
Step 3: Find Q1 and Q3 To find Q1, we look at the first half of the data (the first 6 numbers): \(5, 6, 6, 7, 7, 8\)
- For Q1, we take the average of the 3rd (6) and 4th (7) numbers.
- Q1 = \((6 + 7) / 2 = 6.5\)
To find Q3, we look at the second half of the data (the last 6 numbers): \(8, 8, 9, 9, 14, 16\)
- For Q3, we take the average of the 3rd (9) and 4th (9) numbers.
- Q3 = \((9 + 9) / 2 = 9\)
Step 4: Calculate the IQR
- IQR = Q3 - Q1 = \(9 - 6.5 = 2.5\)
Summary of 5-number summary:
- Minimum value: 5
- Maximum value: 16
- Median: 8
- Quartile 1 (Q1): 6.5
- Quartile 3 (Q3): 9
- IQR: 2.5
Final Values:
- Minimum value: 5
- Maximum value: 16
- Median: 8
- Quartile 1: 6.5
- Quartile 3: 9
- IQR: 2.5