The variance (s2) can most accurately be thought of as being the ...

[karateprodigy]

The variance (s2) can most accurately be thought of as being the _____.
 
  a. measure of central tendency depicted on a graph
  b. square root of the standard deviation
  c. average of the squared deviations from the mean
  d. average deviation of a set of scores from the mean

Question 2

A student conducts a brief survey at a public lecture and finds that most of the people attending the lecture are either over 50 or under 20 . There are very few people there aged 20 to 50 . If the student were to graph the ages in groups of 10 (e.g. 10 to 20; 20 to 30; 30 to 40, etc), the distribution would look _____.
 
  a. normal c. skewed
  b. bimodal d. uniform

[ntsoane kedibone]

Answer to Question 1

C
The variance is the average of the squared deviations around the mean.

Answer to Question 2

B
There are two modes: very young people and very old people.