Question

What are the first and third quartiles of rainfall of this data? Q1 = 5. Q3 = 8 Q1 = 6, Q3 = 8 Q1 = 4, Q3 = 7 Q1 = 5, Q3 = 7.5

Answer 1

Q1 = 5, Q3 = 8

Step-by-step explanation:

There are a total of 19 dots on the chart.

`\begin{gathered} Item\; in\; Q_1=(1)/(4)*19 \\ =4.75th\text{ item} \end{gathered}`

The 5th item on the chart =5, therefore:

• Q1 = 5

Similarly:

`\begin{gathered} Item\; in\; Q_3=(3)/(4)*19 \\ =14.25th\text{ item} \end{gathered}`

The 14th and 15th item on the chart =8, therefore:

• Q3 = 8