what statements best define percent error? check all that apply.it is a mathematical way of showing accuracy. the higher the percent error, the more accurate the data set. the higher the percent error, the less accurate the data set. only the experimental value is needed to calculate percent error. only the actual, or accepted, value is needed to calculate percent error. a percent error always has a positive value.

It is a mathematical way of showing accuracy.The higher the percent error, the less accurate the data set.

Explanation:

Percent error is the difference between the experimental value and theoretical value and measures the accuracy of the result found. The larger the error, lesser is the accuracy and vice versa.

The experimental value can be greater or smaller than accepted value thus percent error can be positive as well as negative. But we only consider the value without the sign.

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day