## Algebra 1: Common Core (15th Edition)

You have the values 23,31,26,27,25,28,23,23,25,29,29,29,25,22,30. To find the mean add all the numbers and divide by 15(number of values):$\frac{23+31+26+27+25+28+23+23+25+29+29+29+25+22+30}{15}$=$\frac{395}{15}$=26.33.The mean is 26.33 To find the median, arrange the numbers from least to greatest and find the middle value:22,23,23,23,25,25,25,26,27,28,29,29,29,30,31.The median is 26. To find the mode, determine which numbers occur most often.23,25 and 29 occur thrice. So the modes are 23,25 and 29. The range is the difference between the largest and smallest value: 31-22=9. The range is 9.