The shaded bars in the histogram below represent the times (rounded to the nearest 10 milliseconds)that 50 people take to react to a loud noise.Which of the following statements is true?
A)The distribution of reaction times is positively skewed.
B)The modal reaction time is 250 ms.
C)The median reaction time is less than 250 ms.
D)The mean reaction time will be less than the modal reaction time.
E)The mean is an unambiguous measure of central tendency.

Question

The shaded bars in the histogram below represent the times (rounded to the nearest 10 milliseconds)that 50 people take to react to a loud noise.Which of the following statements is true? 
A)The distribution of reaction times is positively skewed. 
B)The modal reaction time is 250 ms. 
C)The median reaction time is less than 250 ms. 
D)The mean reaction time will be less than the modal reaction time. 
E)The mean is an unambiguous measure of central tendency.

Quizplus · Accepted Answer

The shaded bars are not symmetrical around the peak, indicating that the distribution is not normally distributed. Additionally, the tail of the distribution appears to extend more to the right, indicating that there are more people with longer reaction times than with shorter reaction times. This means that the distribution is positively skewed.

The Shaded Bars in the Histogram Below Represent the Times