Statistics

0.75

10100

When there are two or more events that are independent then counting is usually simpler.

Expressed as a percentage, 46/56 x 100 = 82.142857 recurring (that is, 82.142857142857...) percent.

A node.

It is actually very simple, just take 10 to the square root of four.

10^4

Because in order to keep the same measurement

(4 + 4 + 4)/4 = 3

The median is a single number. If there are an even number of observations so that there are two "middle" numbers, then the median is the arithmetic average of the two (their sum divided by 2).

It is wrong because there is no such thing the highest "Percent" ever is 100%

you can get graded higher than that in school sure but that is because you have gotten extra credit

This only works for y=mx, not y=mx+c.

theta = tan(m)

eg y=x theta = tan(1)

.: theta = 45

A circle graph

No, the lists would be too large and few people would wish to get one anyway.

None, since there is nothing for the number to be equal to (or eaqual, even).

The probability of picking a 15 or a 16 from the random set [1-20] is 2 in 20, or 1 in 10, or 0.1.

I think this is an important question. There are a number of similar words: estimate, estimating, estimator, and estimand.

An estimate is a non-exact result. If I calculate a value from a sample of data, I can state that the value is an estimate of a larger set of uncollected data (a population).

For example, if I take a sample of 20 numbers, and calculate the average, the number is exact. However, this average may be close to the mean of population. The average in mathematics is called an estimator of the population's mean.

I've included a related link. Don't worry if you don't understand a lot of it. It shows a lot of different types of estimators exists, and the subject is quite mathematical.

Estimating is the process of making an estimate.

An estimand is the particular value or attribute in the population which we want to know as well as we can. It is the objective of the study. I want to know how many years the average cat lives ("the estimand"). Obviously, I will never know this precisely, but I collect data, and make estimates of the estimand.

See related links.

6

Σn

2

What is n??

Please answer

There are 2000 pounds in one ton (short ton). Therefore, 4900 pounds is equal to 4900/2000 = 2.45 tons.

Yes

Yes

No.

your set of even number x = {2,4,6}, which tells you that 3 out the 6 sides are even. Your probability is 3/6 = 1/2

If the pearson's skew is between 0.0 and 0.49, then it is a normal or non-problematic distribution. If it is above .50, then it is not a normal distribution.

In appearance:

The data should be symmtrical; the mode and median should be very close to the mean; around 65 % of the observations should be withing one standard deviation (SD) of the mean; 95% of observations with 2 SD of the mean and almost all within 3 sd.

Better evidence can be provided by the chi-square or Kolmogorov-Smirnoff goodness-of-fir tests.

There may also be evidence from the nature of the data. For example, the means of samples will be closer to being normally distributed (Central Limit Theorem) than the individual observations.

That's 106.7 inches - which is 8ft 10.7in

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