Could someone please explain to me what a negative relative error means? I got a relative error value of -30% in my lap and am unsure of what this means in terms of accuracy and percision of my lab data/experiment. Any help would be great thank you!

Using your values for 7, calculate the average period Ibar (I) and its standard error. How does the error on the average period /bar (T) compares to the errors on the periods, I? What can you do to reduce the uncertainty on /bar (T)? What can you do to reduce the uncertainty on 7 ? Peried Trial T AT 4 141 $ 10.69 +α-0.5 2 10.60 + or -0.5 2 10.40 +α-0.5 10.43 +α-0.5 S 10.37 + or -0.5 Using your values for T, calculate the average period 7 and its standard error How does the error on the garage period compares to the errors on the periods, 7? What can you do to reduce the uncertainty on 7? What can you do to reduce the uncertainty on T7

You measure the radius of a sphere as (6.30 ± 0.25) cm, and you measure its mass as (1.74 ± 0.09) kg. What is the density and uncertainty in the density of the sphere, in kilograms per cubic meter? 4.0 1661.8 X+4.0 X ) × 10³ kg/m³ Need Help? Read It 1.19

What is the difference between accuracy and precision? Explain 2. Calculate the volume and percent error/uncertainty in the volume of a rectangular sample block of length 13.51 ±0.05 cm, width 6.23 ±0.02 cm, and thickness of 1.76±0.02 cm. 3. Calculate the mass density and uncertainty in the mass density of the sample block. Mass of the block is 289± 1gr. 1.