Find median and mode of the messages received on 9 consecutive days 15, 11, 9, 5, 18, 4, 15, 13, 17.Options13, 618, 1515, 1613, 18

To find the median and mode of the messages received on 9 consecutive days, we first need to sort the data in ascending order. The data given is: 15, 11, 9, 5, 18, 4, 15, 13, 17.

Step 1: Sort the data in ascending order: 4, 5, 9, 11, 13, 15, 15, 17, 18.

Step 2: Find the median. The median is the middle number in a sorted list of numbers. Since we have 9 numbers, the median is the 5th number. So, the median is 13.

Step 3: Find the mode. The mode is the number that appears most frequently in a data set. In this case, the number 15 appears twice, more than any other number. So, the mode is 15.

So, the median is 13 and the mode is 15. The correct option is 13, 15.