Question

1. The students at Loretto were surveyed abouttheir primary means of electroniccommunicationand it was found that:38% use a cell phone53% use a social networking site41% use email23% use a cell phone and email20% use a cell phone and a socialnetworking site22% use email and a social networking site15% use a cell phone, email and a socialnetworking site(a) Create a Venn diagram that illustrates theabove information.(b) What percent of students use a cell phoneor email?(c) What percent of students use a cell phone orsocial networking site, but do not use email?

Answer 1

a)

Let us look at your Venn-digram

Since there are 15% common for the 3 types

Then we should Subtract it from all given information

In a cell phone, there is 38%

There is 20% common with the cell phone and social network

There is 23% common with the cell phone and email

So the percent of using The cell phone only is 10% (you are correct)

The percentage of cell phone and email only is 8% (you are correct)

The percent of cell phone and social networking is 5% (you are correct)

In social networking, there is 53%

We will subtract from it 15%, 5%, and 7% (common with email)

Then it should be (53 - 15 - 5 - 7 = 26%) (you are incorrect)

In Email, there is 41%

We will subtract 8%, 7%, and 15%

Then it is (41 - 15 - 7 - 8 = 11%) (you are correct)

Let us answer the questions

(b) Cell phone or email = 38% + 41% - 23% = 56%

(c) Cell phone or social networking but not email = 10% + 5% + 26% = 41%