The following data shows the number of hours $24$ students of a class spent studying per day. \(3\

Question

The following data shows the number of hours $24$ students of a class spent studying per day.

$3$	$3$	$4$	$6$	$1$	$4$	$0$	$2$
$3$	$1$	$0$	$4$	$5$	$4$	$5$	$6$
$0$	$3$	$2$	$0$	$3$	$0$	$3$	$3$

Using the grid below, draw a dot diagram to represent the above data.
Calculate the mean number of hours the students spent studying.
If the above data was presented on a pie chart, what is the size of the angle that represents the number of students who study at least $3$ hours a day?
What is the probability of a student studying $4$ hours a day?

Accepted Answer

(a) Dot frequencies $0:5,\ 1:2,\ 2:2,\ 3:7,\ 4:4,\ 5:2,\ 6:2$ (b) $2\frac{17}{24}$ hours (c) $225^\circ$ (d) $\frac{1}{6}$

\(3\)	\(3\)	\(4\)	\(6\)	\(1\)	\(4\)	\(0\)	\(2\)
\(3\)	\(1\)	\(0\)	\(4\)	\(5\)	\(4\)	\(5\)	\(6\)
\(0\)	\(3\)	\(2\)	\(0\)	\(3\)	\(0\)	\(3\)	\(3\)

Finding The Mean From A Dot Diagram