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loris [4]
1 year ago
7

A researcher carefully calculates the correlation coefficient and gets a value of r=1.23. What does this value mean?

Mathematics
1 answer:
Vaselesa [24]1 year ago
4 0
Answer: An error was made! All correlation coefficients: -1 ≤ r ≤ 1.
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A store manager records the total visitors and sales, in dollars, for 10 days. The data is shown in the scatter plot. What concl
pickupchik [31]

Answer:An increase in visitors is correlated with an increase in sales.

Step-by-step explanation:

From the given scatter plot we can see that variables are positively correlated  because they are moving in the same direction.

Since we know that the positive correlation is a relationship between two variables such that they increase or decrease together.

Since, the two variables given her is " number of visitors" and "Total sales"

Therefore, based on the given data it can be observed that "An increase in visitors is correlated with an increase in sales."

3 0
2 years ago
A glass bead has the shape of a rectangular prism with a smaller rectangular prism removed. What is the volume of the glass that
olganol [36]

The volume of the removed portion is 35 cm³.

Step-by-step explanation:

Given,

The length× width× height (L×B×H) of the outer part = 3 cm×3 cm×7 cm

The length× width× height (l×b×h) of the inner part = 2 cm×2 cm×7 cm

To find the volume of the removed portion.

Formula

The volume of the removed portion = volume of outer part - volume of inner part

Volume of rectangular prism = l×b×h

Now,

Volume of outer part = 3×3×7 cm³ = 63 cm³

Volume of inner part = 2×2×7 cm³ = 28 cm³

Hence,

The volume of the removed portion = 63-28 cm³ = 35 cm³

4 0
1 year ago
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In circle O, tangent MN and secant MPQ are drawn to the circle from exterior point M. If MP = 6 and PQ = 8 then which of the fol
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Answer:

42

Step-by-step explanation:

3 0
2 years ago
Which equation represents a proportional relationship that has a constant of proportionality equal to –10? y = x minus 10 y = x/
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y=-10x

Step-by-step explanation:

y=-10x

y/x=-10

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Naomi and her children went into a bakery where they sell donuts for $1.25 each and cookies for $0.75 each. Naomi has $15 to spe
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I dont know the ans can u pls tell me the ans if you get it

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