Question 2 The following frequency distribution table describes the distribution of the length of phone calls arriving at a bank call centre. Length of call (minutes) Frequency 0 - 5 11 5 – 10 28 10 –...


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Question 2<br>The following frequency distribution table describes the distribution of the length of phone calls<br>arriving at a bank call centre.<br>Length of call (minutes) Frequency<br>0 - 5<br>11<br>5 – 10<br>28<br>10 – 20<br>40<br>20 – 30<br>2<br>(a) Calculate the sample mean.<br>(b) Find the median.<br>(c) Find the mode.<br>(d) Calculate the sample standard deviation.<br>

Extracted text: Question 2 The following frequency distribution table describes the distribution of the length of phone calls arriving at a bank call centre. Length of call (minutes) Frequency 0 - 5 11 5 – 10 28 10 – 20 40 20 – 30 2 (a) Calculate the sample mean. (b) Find the median. (c) Find the mode. (d) Calculate the sample standard deviation.

Jun 11, 2022
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