Please help this is for my test
1 answer:
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Answer: .
Step-by-step explanation:
It is given that three times a number r plus 8 is fewer than −12.
We need to write the sentence as an inequality.
Three times a number r = 3r
Times a number r plus 8 = 3r+8
Fewer than = less than = <
So, the inequality for the sentence "three times a number r plus 8 is fewer than −12" is
Therefore, the required inequality is .
Answer:
4) positive 1.05
Step-by-step explanation:
<u>Correlation:-</u>
Correlation is a statistical measure that indicates the extent to which two or more variables fluctuate together.
Examples:i) The yield of a crop varies with the amount of rainfall
ii) The price of a commodity increases with the reduction in its supply and so on.
That is when the changes in one variable are associated or followed by changes in the other, is called <u>correlatio</u><u>n</u>
<u>positive correlation</u>:- If an increase (or decrease ) in the values of one variable corresponds to an increase(or decrease ) in the other, then correlation is said to be <u>positive.</u>
<u>negative correlation</u>:- If an increase (or decrease ) in the values of one variable corresponds to an decrease(or increase ) in the other, then correlation is said to be <u>negative</u>.
<u>no correlation:-</u>
If there is no relationship indicated between the variables,they are said to be independent or uncorrelated.
<u>uses of correlation</u>:-it is used in presenting the average relationship between any two variables through a single value of co-efficient of correlation. correlation is a statistical technique that can show whether and how strongly pairs of variables are related.
The range of correlation is
r=-1 is the negative correlation
r=1 is the positive correlation
so the answer is not a possible value for the correlation coefficient is positive 1.05.