Why is it important to label units properly?

We use units while measuring the quantities so we can understand what we are measuring ... You can't reply without unit. You must use some unit of length such as feet, meter, centimetre etc. You can't say only quantity

It is important to ensure proper measurement in the chemistry lab. To do this, always use SI units to quantify and describe what you measure. Also consider both ... Measurements that are imprecise do not properly identify random errors and can yield a widespread result ... Make a third column and label it "Normalized data.