# Which value on the number line is the best estimate of the center of the data set?

**Solution:**

It is given that

70 x

80 x

90 xx

100 xxx

110 xxxx

120 xxxx

130 xx

140 x

So the data set is 70, 80, 90, 90, 100, 100, 100, 110, 110, 110, 110, 120, 120, 120, 120, 130, 130, 140

We know that the centre of a data set is the median

As the number of the data set is even, we have to consider the two middle terms 9th term 110 and 10th term 110

Median = (110 + 110)/2 = 220/2 = 110

Therefore, the center of the data set is 110.

## Which value on the number line is the best estimate of the center of the data set?

**Summary:**

The value on the number line is the best estimate of the center of the data set is 110.