Graphing

Questions

Question 1 out of 2.

When discussing a histogram, what does "bin width" mean?

• The result of subtracting the smallest observation from the largest.
• The average number of scores falling into each interval.
• The amount of "skew" shown by the distribution.
• The result of dividing the range of scores by the number of classes.

Question 2 out of 2.

If you apply Sturges' rule to a data set including 4000 observations, how many intervals should your histogram have?

• The top of the box.
• The base 2 logarithm of 4096 (which is close to 4000) is 13, so Sturges' rule recommends 13 + 1 or 14 intervals.
• We should have 11 intervals because this is 1 less than the base 2 logarithm of 4000.
• According to Sturges' rule, there should be 13 intervals because the base 2 logarithm of 4096 (which is close to 4000) is 12.