Transcript text: Distinguish between absolute and relative change. Choose the correct answer below.
A. Absolute change is the size of the actual increase or decrease from a reference value in comparison to the new value and can be expressed as a percentage. Relative change describes the actual increase or decrease from a reference value to a new value.
B. Absolute change is the size of the actual increase or decrease from a reference value in comparison to the reference value and can be expressed as a percentage. Relative change describes the actual increase or decrease from a reference value to a new value.
C. Absolute change describes the actual increase or decrease from a reference value to a new value. Relative change is the size of the absolute change in comparison to the reference value and can be expressed as a percentage.
D. Absolute change describes the actual increase or decrease from a reference value to a new value. Relative change is the size of the absolute change in comparison to the new value and can be expressed as a percentage.
Give an example that illustrates how a relative change is calculated. Choose the correct answer below.
A. If the new value is 50 and the reference value is 20, then relative change $=\frac{50-20}{50} \times 100 \%=60 \%$.
B. If the new value is 50 and the reference value is 20, then relative change $=50-20=30$.
C. If the new value is 50 and the reference value is 20, then relative change $=\frac{50-20}{20} \times 100 \%=150 \%$.
D. If the new value is 50 and the reference value is 20, then relative change $=20-50=-30$.