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NDA 2014
Exam
NDA
Year
2014
Subject
Mathematics
Chapter
Statistics

NDA 2014 · Mathematics · Statistics

Paragraph : The number of telephone calls received in 245...

<strong>Paragraph:</strong>Thenumberoftelephonecallsreceivedin245successiveoneminuteintervalsatanexchangeisgivenbelowinthefollowingfrequencydistribution.<tableclass="qx−match−listqx−match−table"border="1"cellpadding="6"cellspacing="0"><tr><td>Numberof<br>calls</td><td>0</td><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td><td>7</td></tr><tr><td>Frequency</td><td>14</td><td>21</td><td>25</td><td>43</td><td>51</td><td>40</td><td>39</td><td>12</td></tr></table><strong>Question:</strong>Whatisthemodeofthedistribution?<strong>Paragraph :</strong> The number of telephone calls received in 245 successive one minute intervals at an exchange is given below in the following frequency distribution. <table class="qx-match-list qx-match-table" border="1" cellpadding="6" cellspacing="0"><tr><td>Number of<br>calls</td><td>0</td><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td><td>7</td></tr><tr><td>Frequency</td><td>14</td><td>21</td><td>25</td><td>43</td><td>51</td><td>40</td><td>39</td><td>12</td></tr></table> <strong>Question :</strong> What is the mode of the distribution?

Options

  1. A3
  2. B4
  3. C5
  4. D6

Correct answer

B. 4

Step-by-step solution

From the given table it is clear that 51 has the highest frequency 4. Hence, mode of the given frequency distribution is 4.
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