Statistical measures like mean, median, mode, and range are really helpful in our daily lives! Let’s break them down:

1. Mean: This is just another word for average. We use it to understand how well students are doing overall. For example, if three students scored 70, 80, and 90 on a test, we find the mean by adding their scores and dividing by the number of students. So, it would be $\frac{70 + 80 + 90}{3} = 80$. That means, on average, they scored 80.

2. Median: This tells us the middle score when all the numbers are lined up. If we have exam scores of 60, 70, 80, and 90, we first arrange them. The scores in the middle are 70 and 80, so we add them together and divide by 2. This gives us $(70 + 80)/2 = 75$. The median score is 75.

3. Mode: The mode is the value that appears most often in a list. For example, if a store sells the most of a certain toy, that toy is the mode.

4. Range: This shows how much the data varies. For instance, if the highest temperature recorded is 15°C and the lowest is 5°C, we find the range by subtracting the smallest number from the biggest. So, the range is $15 - 5 = 10°C$.

Using these measures helps us make smart choices based on numbers!