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Question

A survey is taken with 15 employees on the number of projects that they have worked, and is listed. The measure that best represents the data is its


A
mean
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B
median
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C
mode
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Solution

The correct option is A mean
The give dot plot is


The data set from the given dot plot is

3, 3, 4, 5, 5, 5, 5, 6, 6, 6, 7, 7, 9, 9, 9

Mean = sum of all datanumber of data

= 3+3+4+5+5+5+5+6+6+6+7+7+9+9+915

= 8915

= 5.93

For a set with an odd number of values, the median is the middle value of the data set when it is arranged in an ascending or descending order.

Arranging the numbers in ascending order, we get

3, 3, 4, 5, 5, 5, 5, 6, 6, 6, 7, 7, 9, 9, 9

Median = 6

The mode of the data set is the value or values that occur most often.

Mode = 5

Among mean, median and mode of the data, mean is the best measure of data.

Hence, Mean is the best measure because there are no extreme values (outlier) in the data and mean is the only measure of center that uses all the values of the data.


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Q. Read the following passage carefully and answer the questions that follow:
The evolution of Bring Your Own Device (BYOD) trend has been as profound as it has been rapid. It represents the more visible sign that the boundaries between personal life and work life are blurring. The 9 am – 5 pm model of working solely from office has become archaic and increasingly people are working extended hours from a range of locations. At the very heart of this evolution is the ability to access enterprise networks from anywhere and anytime. The concept of cloud computing serves effectively to extend the office out of office. The much heralded benefit of BYOD is greater productivity. However, recent research has suggested that this is the greatest myth of BYOD and the reality is that BYOD in practice poses new challenges that may outweigh the benefits. A worldwide survey commissioned by Fortinet chose to look at attitude towards BYOD and security from the users point of view instead of the IT managers. Specifically the survey was conducted in 15 territories on a group of graduate employees in their early twenties because they represent the first generation to enter the workplace with an expectation of own device use. Moreover, they also represent tomorrow’s influences and decision makers. The survey findings reveal that for financial organizations, the decision to embrace BYOD is extremely dangerous. Larger organizations will have mature IT strategies and policies in place. But what about smaller financial businesses? They might not have such well developed strategies to protect confidential data.
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