Please help im stuck!

Which of the following is NOT a possible value for the correlation coefficient? 1) negative 0.9 2) zero 3) positive 0.15 4) posi

AnnyKZ [126]

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 $-1\leq r\leq 1$

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.

4 0

3 years ago

BiLo currently has 12-packs of Pepsi on sale for $5.55. Food Lion has a sale on 6-packs of Pepsi for $2.75. Which is the better

Gennadij [26K]

To find the cost per can, we can divide the total cost by the number of cans.

$\frac{total\ cost}{number\ of\ cans} = cost\ per\ can$

<h2>Let's start with BiLo:</h2>

Total cost: $5.55

Number of cans: 12

The cost per can will be:

$\frac{total\ cost}{number\ of\ cans} = \frac{5.55}{12} = 0.4625$

$0.4625 per can

How about Food Lion?

Total cost: $2.75

Number of cans: 6

The cost per can will be:

$\frac{total\ cost}{number\ of\ cans} = \frac{2.75}{6} = 0.458333....$

Around $0.4583 per can

<h2>Comparing</h2>

BiLo: $0.4625

Food Lion: around $0.4583

As we can see, Food Lion has a better cost per can, as it costs less to buy each can of Pepsi.

Answer: Food Lion has a better cost per can

4 0

3 years ago

The Slope of whats graphed

Bumek [7]

Answer:

Slope: 1/3

Step-by-step explanation:

y = 1/3 x - 2

8 0

4 years ago

Please help me with 19 and 20

stiv31 [10]

Answer:

id have to see the chart to help you

i can see k which the answer for 19).is (0,-3)

but for 20 id have to see the chart

Step-by-step explanation:

if you add a picture of the chart i can help:)

4 0

3 years ago

X + 3y = 42<br> 2x - y= 14

vitfil [10]

Answer:

x=12,y=10

Step-by-step explanation:

Step: Solve x+3y=42

x+3y=42

x+3y+−3y=42+−3y(Add -3y to both sides)

x=−3y+42

Step: Substitute−3y+42forxin2x−y=14:

2x−y=14

2(−3y+42)−y=14

−7y+84=14(Simplify both sides of the equation)

−7y+84+−84=14+−84(Add -84 to both sides)

−7y=−70

Divide both sides by -7

y=10

Step: Substitute10foryinx=−3y+42:

x=−3y+42

x=(−3)(10)+42

x=12(Simplify both sides of the equation)

Hope this Helps:)

-Ac<3-

6 0

3 years ago