Question

the line plot shows the prices in dollars for several dvds.
dvd prices ($)
which of the following is true about the distribution shown?
it is symmetric.
it is skewed right.

Explanation:

Analyze the line plot data

Using the Data Distribution Shape knowledge point

• The line plot displays the frequency of DVD prices:
• \$11: 1
• \$12: 1
• \$13: 3
• \$14: 4 (the peak/center)
• \$15: 3
• \$16: 1
• \$17: 1

Determine the symmetry of the distribution

Using the Data Distribution Shape knowledge point

• The peak is at \$14.
• The frequencies on the left side of the peak (\$13, \$12, \$11) are 3, 1, 1.
• The frequencies on the right side of the peak (\$15, \$16, \$17) are 3, 1, 1.
• Since the left and right sides are perfect mirror images of each other, the distribution is symmetric.

Answer:

• It is symmetric. (Correct answer)
• It is skewed right.