A value that is typical or representative of the data is referred to as a measure of central location.

1.  A value that is typical or representative of the data is referred to as a measure of central location.

Answer: True          

2.  The arithmetic mean is the sum of the observations divided by the total number of observations.

Answer: True       

3.  For a set of data arranged or sorted in numerical order, the value of the observation in the center is called the weighted mean.

Answer: False          

4.  A set of ordinal, interval or ratio level data may only have one mode.

 

5.  If a variable is measured at the interval or ratio level, all the values are included when computing the mean.

6.  A variable measured at the interval or ratio level can have more than one arithmetic mean.

7.  The mode is the value of the observation that appears most frequently.

8.  A distribution that has the same shape on either side of the center is said to be symmetrical.

9.  A negatively skewed distribution is not symmetrical. The long tail is to the left or in the negative direction.

10.  The geometric mean is the nth root of n observations.

 

11.  A statistic is a measurable characteristic of the population.

12.  A parameter is a measurable characteristic of a sample.

13.  The median can be determined for any set of interval-level data.

14.  Extremely high or low scores affect the value of the median.

  

15.  The sum of the deviations from the mean for the set of numbers 4, 9 and 5 will equal zero.

                                        

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