Sampling Distributions With Means And Proportions Flashcards

0
Q

What is P

A

Population proportion

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1
Q

What is a parameter

A

It is the population

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2
Q

What is a statistic

A

It’s a calculated sample

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3
Q

What happens if your sample size increases

A

The standard deviation decreases

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4
Q

What happens when sample size decreases

A

Standard deviation increase

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5
Q

To approx a normal curve you must show what for the mean

A

If it’s greater or equal to 30

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6
Q

To approx a normal for proportions you must show what

A

N(p)

N(1-p).

Greater or equal to 10

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7
Q

What is the mean standard deviation

A

Sd over square root of n

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8
Q

Standard deviation formula for proportions

A

Square root of p(1-p) over n

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9
Q

Mean of the sample mean equals the mean of the

A

Population

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10
Q

Mean of the sample proportion equals the

A

Population proportion

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11
Q

If the mean of a sampling distribution equals a statistic used to estimate that mean it is

A

Unbiased

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12
Q

To find probability greater than a number use

A

Normal cdf

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13
Q

Use inversnorm to

A

Find sample mean or proportion at certain percentile

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