Question

The Deaartment of Statistics randomly selected 15 students with their marks (in percentage) during the last examination. The data of the 15 students are as follows: \begin{tabular}{|c|l|l|l|l|l|l|l|l|} \hline 50 & 72 & 63 & 60 & 80 & 79 & 41 & 48 & 23 \\ \hline 72 & 96 & 34 & 43 & 55 & 51 & & & \\ \hline \end{tabular} Which one of the following statements is incorrect? Select one: 1. The mean mark is 57.8 . 2. The median mark is 55. 3. The range of the marks is 73 . 4. Approximately \( 50 \% \) of the students fail the exam. 5. The mode is 72.

          The Deaartment of Statistics randomly selected 15 students with their marks (in percentage) during the last examination. The data of the 15 students are as follows:

\begin{tabular}{|c|l|l|l|l|l|l|l|l|}
\hline 50 & 72 & 63 & 60 & 80 & 79 & 41 & 48 & 23 \\
\hline 72 & 96 & 34 & 43 & 55 & 51 & & & \\
\hline
\end{tabular}

Which one of the following statements is incorrect?

Select one:
1. The mean mark is 57.8 .
2. The median mark is 55.
3. The range of the marks is 73 .
4. Approximately \( 50 \% \) of the students fail the exam.
5. The mode is 72.

The Deaartment of Statistics randomly selected 15 students with their marks (in percentage) during the last examination. The data of the 15 students are as follows:

50 72 63 60 80 79 41 48 23

72 96 34 43 55 51

Which one of the following statements is incorrect?

Select one:
1. The mean mark is 57.8 .
2. The median mark is 55.
3. The range of the marks is 73 .
4. Approximately 50 % of the students fail the exam.
5. The mode is 72.

Added by John D.

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