Percent error calculations are used to determine how close to the true values, or how accurate, experimental values really are.The formula is similar to finding percent of change.
Experimental value - actual value
percent error= --------------------------------- x 100
actual value
In chemistry class, Charlie records the volume of a liquid as 13.3 millimeters. The actual volume is 13.6 millimeters. What is his percent error? Round to the nearest percent. WILL GIVE MEDAL

Question

Percent error calculations are used to determine how close to the true values, or how accurate, experimental values really are.The formula is similar to finding percent of change.
                      Experimental value - actual value
percent error=  ---------------------------------        x 100
                           actual value 
In chemistry class, Charlie records the volume of a liquid as 13.3 millimeters. The actual volume is 13.6 millimeters. What is his percent error? Round to the nearest percent.  WILL GIVE MEDAL

perl · Answer

(13.6 - 13.3 ) /( 13.3) = ? 

multiply that by 100

anonymous · Answer

hey perl

anonymous · Answer

how do i get my smartscore up

anonymous · Answer

@perl

perl · Answer

if you guide students, you get medals :)

campbell_st · Answer

I think you have experimental = 13.3
                          actual = 13.6

so its 

Percentage error = (13.3 - 13.6)/(13.6) x 100

it's just a case of substituting the values into the correct positions

perl · Answer

if i plugged in the actual formula i would get a negative answer, 
so you can modify the formula , use the absolute value