How do you find variance

Mathematics

1 answer:

Pepsi [2]2 years ago

4 0

And if you need an example this is the website I went to: http://www.mathsisfun.com/data/standard-deviation.html

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Which equation below would be parallel to the line y= 2x+5 and pass through the point (3,1)

ki77a [65]

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1 year ago

Write and solve a proportion to answer the question.<br><br> 36 is 0.9% of what number w?

USPshnik [31]

The question can be written out like this:
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2 years ago

A national survey interviewed 3800 people ages 18 and older nationwide by telephone. One question asked was the amount of gasoli

NeTakaya

Answer:

For this case a parameter represent the population data and for this case the parameter would be the true mean $\mu$ who represent the amount of gasoline they used in the previous week

$\bar X= \frac{\sum_{i=1}^n X_i}{3800} =11.75$

And the sample mean is an unbiased estimator of the true mean.

Step-by-step explanation:

For this case a parameter represent the population data and for this case the parameter would be the true mean $\mu$ who represent the amount of gasoline they used in the previous week

And in order to estimate the parameter of interest we use a survey of n =3800 and the sample mean who represent an statistic is given by:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$