The age at inauguration of the five U.S. presidents prior to Joe Biden is shown below.[1]
D. Trump: 70	B. Obama: 47	G. W. Bush: 54
W. Clinton: 46	G. H. W. Bush: 64
Use a spreadsheet to calculate the mean and standard deviation of this set of numbers. Round your answers to the nearest tenth.

To calculate the mean and standard deviation of the ages at inauguration for the five U.S. presidents prior to Joe Biden, you can follow these steps using a spreadsheet:

1. **Enter the Data:**
   - In a spreadsheet, input the ages in a column (e.g., A1 through A5):
     - A1: 70 (Donald Trump)
     - A2: 47 (Barack Obama)
     - A3: 54 (George W. Bush)
     - A4: 46 (Bill Clinton)
     - A5: 64 (George H. W. Bush)

2. **Calculate the Mean:**
   - In an empty cell (e.g., A6), use the `AVERAGE` function to calculate the mean:
     - Formula: `=AVERAGE(A1:A5)`
   - The result is approximately 56.2.

3. **Calculate the Standard Deviation:**
   - In another empty cell (e.g., A7), use the `STDEV.P` function to calculate the standard deviation (since this is a full population, not a sample):
     - Formula: `=STDEV.P(A1:A5)`
   - The result is approximately 9.5.

### Final Answers:
- **Mean:** 56.2 years
- **Standard Deviation:** 9.5 years

Would you like more details on these calculations or have any other questions?

Here are 5 related questions you might find interesting:
1. How does the mean age of these presidents compare to the overall average age of all U.S. presidents at inauguration?
2. What is the impact of outliers on the standard deviation in this data set?
3. How would the calculations change if we used the sample standard deviation instead?
4. What is the median age of the five presidents at inauguration?
5. How does Joe Biden's age at inauguration compare to this group?

**Tip:** Understanding the difference between population and sample standard deviation is crucial in statistics; use `STDEV.P` for populations and `STDEV.S` for samples.

The age at inauguration of the five U.S. presidents prior to Joe Biden is shown below. D. Trump: 70 B. Obama: 47 G. W. Bush: 54 W. Clinton: 46 G. H. W. Bush: 64. Use a spreadsheet to calculate the mean and standard deviation of this set of numbers. Round your answers to the nearest tenth.

Learn how to calculate the mean and standard deviation of the ages of the five U.S. presidents prior to Joe Biden using a spreadsheet. This statistical problem involves finding the average age and variability in their ages. Suitable for high school students.

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