Jamming attacks on wireless networks. Refer to the International Journal of Production Economics (Vol. 172, 2016) study of U.S. military jamming attacks on wireless networks used by terrorists, Exercise 1.16 (p. 50). Recall that 80 recent jamming attacks were classified according to network type (WLAN, WSN, or AHN) attacked and number of channels (single- or multi-channel) of the network. The results are summarized in the accompanying table.

Network Type/ Number of Channels	Number of Jamming Attacks
WLAN / Single	31
WSN / Single	13
AHN / Single	8
WLAN / Multi	14
WSN / Multi	9
AHN / Multi	5
Total	80

a. Construct a Pareto diagram for the data. Interpret the results.

b. Construct a pie chart for network type only. Interpret the results.

Step by step solution

01

Preparing the Pareto diagram

The number of jamming attacks is shown in descending order in the Pareto diagram using the distribution of data as shown below:

Network Type/ Number of Channels	Number of Jamming Attacks	Cumulative	Percentage
WLAN / Single	31	31	38.75
WLAN / Multi	14	45	56.25
WSN / Single	13	58	72.5
WSN / Multi	9	67	83.75
AHN / Single	8	75	93.75
AHN / Multi	5	80	100
Total	80

The orange line represents the cumulative line which is derived as a percentage in the secondary vertical axis.

02

Formating the pie chart

Through the pie chart, one can find to what extent each network faces jamming attacks compared to the others.The larger the pie slice, the greater the number of jamming attacks; and the smaller the slice, the lesser is the number of jamming attacks.

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