A correlation coefficient is a numerical measure of some type of correlation, meaning a statistical relationship between two variables. The variables may be two columns of a given data set of observations, often called a sample, or two components of a multivariate random variable with a known distribution.

6 0

3 years ago

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The population of Arlington in 2000 was 12,475. In 2010 the population had grown to 17,926. What was the percent increase in the

melisa1 [442]

The formula for percent of increase/decrease:

difference in original and new/original x 100

17926-12475/12475=

5451/12475=

.4369

x 100=

43.7% increase

3 0

3 years ago

A book sold 39,300 copies in its first month of release. Suppose this represents 6.3% of the number of copies sold to date. How

konstantin123 [22]

Hi there! So 39,300 copies of a book were sold on debut month of release, and that represents 6.3% of all copies sold to date. To find the total amount of copies sold, we can write and solve a proportion. Set it up like this:

39,300/x = 6.3/100

We set it up like this because 39,300 is part of the total amount, and it represents 6.3% of the total book sales. Percents are parts of 100, which is why 6.3 is above 100. Let's cross multiply the values. 39,300 * 100 is 3,930,000. 6.3 * x is 6.3x. that makes 3,930,000 = 6.3x. Divide each side by 6.3 to isolate the x. 6.3x/6.3 cancels out. 3,930,000/6.3 is 623,809.5238 or 623,810 when rounded to the nearest whole number. There. The total amount of copies sold to date is about 623,810.

8 0

3 years ago

Mrinda has 24 CDs in her collection. of those CDs 10 are pop CDs

Serga [27]

what do you need to find out?

Step-by-step explanation:

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3 years ago

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