Question

Find the sample mean, median, and mode for the data below.

5 6 9 5 1 4 6 4 4 7

Answer 1

The following table is constructed for the given data:

X
5
6
9
5
1
4
6
4
4
7
51

The sample mean is:

  

For computing the median, the data needs to be arranged in ascending order as follows:

1

4

4

4

5

5

6

6

7

9

• Modal value is the value with highest frequency. The following table shows the frequency distribution:

X	Frequency
1	1
4	3
5	2
6	2
7	1
9	1

Since the value 4 has has the highest frequency of 3, hence, .