Math

Mean and covariance matrix calculator

Covariance is a measure of the covariance of two variables (X and Y). The calculator calculates the average for the sample and the covariance between variables. Sets of X and Y must be the same number.

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Math

Weighted average ratings

The calculator calculates the weighted average of the ratings of the following items.

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Math

Conversion between number bases

Converter allows you to convert numbers between number bases - binary (binary), trójkowym, czwórkowym, Friday, szóstkowym, siódemkowym, octal (octal), dziewiątkowym, decimal (decymalnym) jedenastkowym, dwunastkowym, trzynastkowym, czternastkowym, piętnastkowym, hexadecimal (hex). Typed characters that are not numbers and the letters A, B, C, D, E, F are ignored.

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Math

Trigonometric functions calculator

Calculator by entering an angle in degrees or radians calculated values of the basic trigonometric functions.

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Building

Number of wallpapers

Jak oszacować niezbędną ilość tapety?
Ile kupić tapety?
Jak obliczyć ilość tapety potrzebną do wytapetowania pokoju?

Calculator to estimate the necessary amount of wallpaper needed to wytapetowania room of the given dimensions.

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Math

Number cheerful

Checks the calculator is a large number of so-called gay (Happy Number). Number gay is a natural number is defined as follows: Calculate the sum of squares of digits of the number. Repeat this process for the next results as long as we get the number 1 or the results will be repeated. If you have received as a result of one, the original number is the number of gay. Otherwise, a number bleak.

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Math

Centroid of the triangle

The calculator calculates the centroid of the triangle. Centroid is the point through which the median of the three triangle. It divides each median in the ratio of 2:1.

14109

Medical

Replenishing fluids - FFP (fresh frozen plasma)

Calculator based on the entered weight calculates the amount of fresh frozen plasma for transfusion in ml / hour due to the loss of fluids (sweating, bleeding, and other pathological processes).

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Building

Calculator floor panels

Calculator based on the dimensions of the area to put the panels and occupancy data on number of panels in one package, calculate how much you have to buy packages of panels to cover the entire room.