Answer to Question #72234 in Electricity and Magnetism for jojo

Question

The company that you work for produces a range of power supplies which are supplied
in large quantities to businesses that manufacture computers and IT equipment. More
range of power supplies is being added and the company has developed a 50W unit.
From the first batch of 1000 units a 10% sample has been taken and the power output
of each unit tested shown in Table 2(a). Using this data calculate the mean, median
and mode, explaining the significance of each.
PS50 50W Nominal rating
Power output Number
49.60–49.69 1
49.70–49.79 1
49.80–49.89 4
49.90–49.99 7
50.00–50.09 19
50.10–50.19 31
50.20–50.29 21
50.30–50.39 8
50.40–50.49 5
50.50–50.59 2
50.60–50.69 1