Math project .......................................

Question

what is the meaning of mean, median, mode and range.

Answer 1

Let’s consider the set (4, 12, 22, 32, 9, 4, 78)

Mean:
The mean is the sum of the values in the data set divided by the number of data.
mean = sum of the values / number of items in the set
= (4 + 12 + 22 + 32 + 9 + 4 + 78) / 7
= (161) / 7
= 23

Median:
The median is the middle value of the data.
Write the data in numerical order from least to greatest. 4, 4, 9, 12, 22, 32, 78.
Observe the data, the number 12 is the middle value, so median is 12.

Mode:
The mode is the number that occurs most often in a set of data
Observe the data, The number 4 appears twice. So, the mode is 4.

Comments

Range : The largest value in the list is 78, and the smallest is 4.So, the range is 78 - 4 = 74.