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5.08 Bivariate data with technology

Interactive practice questions

Consider the following set of data.

$x$x $3$3 $6$6 $9$9 $12$12 $15$15 $18$18 $21$21
$y$y $-7$7 $-7.35$7.35 $-7.77$7.77 $-7.56$7.56 $-7.63$7.63 $-8.05$8.05 $-7.28$7.28
a

Use technology to calculate the correlation coefficient.

Round your answer to two decimal places.

b

Which of the following best describes the correlation of the two variables?

Perfect positive linear correlation

A

Perfect negative linear correlation

B

Weak positive linear correlation

C

Strong negative linear correlation

D

Strong positive linear correlation

E

Weak negative linear correlation

F
Medium
2min

Consider the following set of data.

Medium
2min

Given the following data:

Medium
1min
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Outcomes

4.1.3.3

use technology to find the line of best fit [complex]

4.1.3.5

use technology to find the correlation coefficient (an indicator of the strength of linear association) [complex]

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