What type of association and correlation are shown by the scatterplot ?

Mathematics

2 answers:

Westkost [7]4 years ago

4 0

Answer:

the answer is a

Step-by-step explanation:

murzikaleks [220]4 years ago

4 0

Answer: linear association , positive correlation.

Step-by-step explanation:

We say a scatter-plot show a linear association if the points are scattered about a straight line .

From the given graph, it can be seen that there is a linear association as the points are scattered about a straight line .

Also it is a positive correlation as the points are moving upwards diagonally (from left to right) which shows if one variable increases then other also increases.

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If c varies directly as the square root of d, and c=14, when d = 64, find c when d= 324

zubka84 [21]

Answer:

c = 31.5

Step-by-step explanation:

Given c varies directly as $\sqrt{d}$ then the equation relating them is

c = k $\sqrt{d}$ ← k is the constant of variation

To find k use the condition c = 14 when d = 64, then

14 = k × $\sqrt{64}$ = 8k ( divide both sides by 8 )

1.75 = k

c = 1.75 $\sqrt{d}$ ← equation of variation

When d = 324 , then

c = 1.75 × $\sqrt{324}$ = 1.75 × 18 = 31.5

5 0

3 years ago

The blank of a number says how many times to use that number ia a multiplication

Evgesh-ka [11]

I'm pretty sure the answer is exponent since it tells you how many times to multiply the number beside it by itself.

Example:

${3}^{4}$
It is NOT 3 × 4 = 12

It is 3 × 3 × 3 × 3 = 9 × 3 × 3 = 9 × 9 = 81

~~

I hope that helps you out!!

Any more questions, please feel free to ask me and I will gladly help you out!!

~Zoey

4 0

3 years ago

The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the e

egoroff_w [7]

Answer: 0.790

Step-by-step explanation:

Given : The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level.

The sample size : n= 2004

The number of students read above the eighth grade level = 1584

Then , the proportion of students read above the eighth grade level is given by :-

$\dfrac{1584}{2004}=0.790419161677\approx0.790$