Final answer:
A normal distribution, when plotted on a histogram, takes on a bell-shaped curve, with the mean, median, and mode all at the center peak and the data symmetrically distributed around this peak.
Step-by-step explanation:
When plotted in a histogram, a normal distribution takes on a bell-shaped curve. Drawing a smooth curve through the tops of the bars of the histogram, the general shape should appear as a symmetric 'bell' with a single central peak tapering off to the sides. This symmetric, bell-shaped curve indicates that the data is evenly distributed around the mean, with most of the data concentrated near the center and fewer occurrences toward the tails.
In a normal distribution, the mean, median, and mode all coincide at the peak of the bell, and the distribution falls off equally on both sides, creating a mirror image about the center.