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Chapter 3: Q 3.2 . (page 100)

Name and describe the three most important measures of center.

Short Answer

Expert verified

The three most important measures of center are :

  • Mean
  • Mode
  • Median

Themean of a data set is the sum of the observations divided by the number of observation.

Median: If the number of the observation is odd, then the median is the observation exactly in the middle of the ordered list. If the number of observations is even, then the median is the mean of the two middle observations in the ordered list.

Mode: If no value occurs more than once, then data set has no mode. Otherwise any value that occurs with the greatest frequency is a mode of the data set

Step by step solution

01

Step 1. Given information. 

Name and describe the three most important measures of center.

02

Step 2. The essential measures of centre should be named and described.

The sum of the observations divided by the number of observations is the data set's mean.

The median is the observation that is exactly in the centre of the ordered list if the number of observations is odd. The median is the mean of the two middle observations in the ordered list if the number of observations is even.

The data set has no mode if no value appears more than once. Otherwise, a mode of the data set is any value that happens the most frequently.

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