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15 results for “real”

Formulae (15)

\sigma(x) = \frac{1}{1 + e^{-x}}

Maps any real number to the range (0, 1); used in logistic regression.

P = VI\cos\phi

Real power with a phase angle between V and I.

S = \sqrt{P^2 + Q^2}

Combination of real and reactive power.

P = \sqrt{3}\,V I \cos\phi

Real power in a balanced three-phase system.

PF = \frac{P}{S}

Ratio of real power to apparent power.

r = \frac{1+n}{1+i} - 1

Return adjusted for inflation.

g = \dfrac{GDP_1 - GDP_0}{GDP_0}\times 100\%

The percentage change in real output between two periods.

Real\ GDP = \dfrac{Nominal\ GDP}{Deflator}\times 100

Output adjusted for inflation, so growth reflects real production, not rising prices.

Deflator = \dfrac{Nominal\ GDP}{Real\ GDP}\times 100

A broad price index covering all goods in GDP, not just a consumer basket.

M \times V = P \times Q

Links the money supply and its velocity to the price level and real output.

i \approx r + \pi

Relates nominal interest rates to the real rate plus expected inflation.

Real = \frac{Nominal}{Deflator}\times 100

GDP adjusted for inflation.

RER = S \times \dfrac{P_{foreign}}{P_{domestic}}

The nominal rate adjusted for price levels, measuring relative purchasing power.

T_{sid} = \dfrac{T_{sol}}{1 + T_{sol}/T_{yr}}

Earth's rotation period measured against the stars, not the Sun.

\text{Scale} = \frac{\text{map distance}}{\text{ground distance}}

Ratio of map distance to real-world distance.