1. **State the problem:** We are given a data set of radio-controlled car prices: 115, 64, 31, 68, 77, 89, 149, 53, 23. We need to find the Median, Mode, and Range. 2. **Median:** The median is the middle value when the data is ordered from least to greatest. Order the data: 23, 31, 53, 64, 68, 77, 89, 115, 149. Since there are 9 numbers (odd count), the median is the middle one, which is the 5th number. Median = 68. 3. **Mode:** The mode is the number that appears most frequently. Check frequencies: all numbers appear once, so there is no mode. Mode = 0 (No Mode). 4. **Range:** The range is the difference between the maximum and minimum values. Maximum = 149, Minimum = 23. Range = 149 - 23 = 126. 5. **Summary:** Median: 68 Mode: 0 (No Mode) Range: 126