1. **State the problem:** We are given a data set representing the number of states traveled to or lived in: 2, 3, 6, 2, 6, 1, 11, 8, 2, 1, 5, 2, 1, 7, 14.
2. **Find the median, mode, and range of the data:**
- Median is the middle value when data is sorted.
- Mode is the most frequent value.
- Range is the difference between the maximum and minimum values.
3. **Sort the data:**
$$1, 1, 1, 2, 2, 2, 2, 3, 5, 6, 6, 7, 8, 11, 14$$
4. **Find the median:**
- There are 15 data points (odd number).
- Median is the 8th value.
- The 8th value is $3$.
5. **Find the mode:**
- Count frequencies:
- 1 appears 3 times
- 2 appears 4 times
- Others less frequent
- Mode is $2$ (most frequent).
6. **Find the range:**
- Maximum value is $14$.
- Minimum value is $1$.
- Range = $14 - 1 = 13$.
7. **Answer for question 9:**
- Median = $3$
- Mode = $2$
- Range = $13$
8. **For question 10:** The student who traveled to 3 states now traveled to 8 states.
9. **Update the data:** Replace one $3$ with $8$:
$$1, 1, 1, 2, 2, 2, 2, 5, 6, 6, 7, 8, 8, 11, 14$$
10. **Find the new median:**
- Still 15 data points.
- Median is the 8th value.
- The 8th value is now $5$.
11. **Compare medians:**
- Original median was $3$.
- New median is $5$.
- Median increases.
12. **Answer for question 10:**
C. Yes. It increases to 5.
Mean Median Mode Range A42158
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