Question

Boran measured the height of a plant for $6$ weeks.
Weeks Passed Height (cm)

$1$	$2$
$2$	$5$
$3$	$9$
$4$	$15$
$5$	$27$
$6$	$50$

Which type of correlation exists between the height of the plant and number of weeks passed?

• A. Positive correlation
• B. Negative correlation
• C. No correlation

Answer 1

The correct option is A Positive correlation

In general, if a plant does not die out, the plant will grow with respect to time. Hence, if weeks passed, the height of the plant will also increase. So, logically, we can conclude that the number of weeks passed and the respective heights of the plant are positively correlated.

Now, let's plot the given data on the height of the plant on each of the six weeks.


From the above scatter plot, we observe that there is an upward trend in the height of the plant as week goes by.

$\therefore$ A postive correlation exists between the height of the plant and number of weeks passed.