Anna Set Up a Frequency Distribution with the Following Classes$$\begin{array} { c c } \text { Number of sick days taken } & \text { Frequency } \ \hline 0 - 3 & \ 3 - 6 & \ 6 - 9 \ 9 - 12 \end{array}$$

Question

Anna Set Up a Frequency Distribution with the Following Classes$$\begin{array} { c c }  \text { Number of sick days taken } & \text { Frequency } \ \hline 0 - 3 & \ 3 - 6 & \ 6 - 9 \ 9 - 12 \end{array}$$

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The Answer is Answers will vary. Possible answer: In a frequency distribution, each observation must belong to one and only one class. In Anna's table, there is overlap of the classes - it is not clear, for example, to which class the value 3 belongs. The classes could have been depicted in either of the following ways:

\begin{array}{l} \begin{array} { c l } ext { Number of sick days taken } \quad ext { Frequency } \ \hline 0 ext {-under } 3 \ ext { 3-under } 6 \ ext { 6-under } 9 \ 9 ext {-under } 12 \end{array}\\ \begin{array} { c l } ext { Number of sick days taken } & ext { Frequency } \ \hline 0 - 2 \ 3 - 5 \ 6 - 8 \ 9 - 11 \end{array} \end{array}

Anna Set Up a Frequency Distribution with the Following Classes $\begin{array} { c c } \text { Number of sick days taken } & \text { Frequency } \\ \hline 0 - 3 & \\ 3 - 6 & \\ 6 - 9 \\ 9 - 12 \end{array}$

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