Use a calculator to find the correlation coefficient of the data set.

Mathematics

1 answer:

ratelena [41]3 years ago

7 0

Answer:

Step-by-step explanation:

Enter the x,y values in the box above. You may enter data in one of the following two formats:

Each xi,yi couple on separate lines:

x1,y1

x2,y2

x3,y3

x4,y4

x5,y5

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The table below shows the scores of a group of students on a 10-point quiz.Test ScoreFrequency3 54 15 16 27 28 49 310 1The mean

Katarina [22]

Explanation

Part A

We can use the formula below to find the mean.

$\text{Mean}=\sum ^{}_{}(\frac{fx}{f})$

We will then have;

$\begin{gathered} \text{Mean = }\frac{5\times3+4\times1+5\times1+6\times2+7\times2+8\times4+9\times3+10\times1}{19}=\frac{15+4+5+12+14+32+27+10}{19} \\ =\frac{119}{19}=6.2632 \end{gathered}$

Mean = 6.2632

Part B

Since the data set is odd.

$\begin{gathered} \text{Median}=\frac{(n+1)}{2}^{th}\text{observation} \\ =\text{Value of }\frac{\text{(19+1)}}{2}^{th}\text{observation} \\ =\text{value of 10th observation} \end{gathered}$

Answer: From the column of cumulative frequency cf, the median is 7

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1 year ago

Find the value of the power.<br> 3 exponent 5

ziro4ka [17]

Answer:

243

Step-by-step explanation:

3*3*3*3*3=243

8 0

3 years ago

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