MedStats Flashcards

1
Q

What is a factorial (!)?

e.g. 5!

A

Each number below or equal multiplied together

e.g. 5! = 5 x 4 x 3 x 2 x 1 = 120

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2
Q

What are the three numbers associated with the summation symbol? (above, below, and to the right)

A

Above = upper limit
Below = lower limit
To the right = the expression being summer over

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3
Q

What is the equation for a line?

A

Y = mx + b

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4
Q

What do the m and b in y = mx + b stand for?

A
m = slope
b = y-intercept
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5
Q

What number does the symbol e stand for? (what would e^3 equal?)

A

2.72 (e^3 = 20.085)

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6
Q

How can e^3 also be written?

A

Exp(3)

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7
Q

What is a number to the 0th exponent (e.g. 5^0)

A

1

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8
Q

What is a number to a negative exponent (e.g. 5^-2)

A

The inverse (1 / 5^2)

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9
Q

What is the inverse of the exponential function?

A

Natural log

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10
Q

What can be done to ln(x) to get x on its own?

A

e ^ ln(x)

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11
Q

To what is the log of 1 equal?

A

0

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12
Q

To what is the log of 0 equal?

A

Undefined

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13
Q

To what is the log of a negative number equal?

A

An imaginary number

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