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(1 point) Below is a bar graph of class standing for a Finance seminar containing five students who are either freshman, sophomores, juniors, or seniors. In the bar graph the bar for the juniors has been omitted. ( Click on the image for a larger view. )

(a) The percentage of students in the seminar who are not juniors is?

A. 60%
B. 40%
C. 20%
D. 80%
E. None of the above.
(b) The number of students in the seminar who are juniors is

1 Point Below Is A Bar Graph Of Class Standing For A Finance Seminar Containing Five Students Who Are Either Freshman Sophomores Juniors Or Seniors In The Bar G class=

Sagot :

MrRoyalidn

Bar graphs are used to display data using bars. From the given bar graph,

  • 80% of the students are not juniors
  • 1 of the student is junior

Given

[tex]n = 5[/tex] ---- number of students

A. Percentage of students that are not juniors

From the bar graph, the students that are not juniors (and their frequencies) are:

[tex]Freshman = 1[/tex]

[tex]Sophomores = 2[/tex]

[tex]Seniors = 1[/tex]

So, the total students that are not juniors are:

[tex]k = Freshman + Sophomores + Seniors[/tex]

[tex]k = 1 + 2 + 1[/tex]

[tex]k = 4[/tex]

The percentage is then calculated using:

[tex]\%k = \frac kn \times 100\%[/tex]

[tex]\%k = \frac 45 \times 100\%[/tex]

[tex]\%k = 0.8 \times 100\%[/tex]

[tex]\%k = 80\%[/tex]

Hence, the percentage who are not junior are 80%

B. Number of junior students

In (A), the number of students who are not junior is 4.

i.e.

[tex]k = 4[/tex]

Using the complement rule, the number of students who are junior (j) is:

[tex]j = n - k[/tex]

So, we have:

[tex]j = 5 - 4[/tex]

[tex]j = 1[/tex]

Hence, 1 of the students is a junior

Read more about bar graphs at:

https://brainly.com/question/14894834

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