Consider the following figures.
Which, if any, of the curves in the figure above look like a normal curve? If a curve is not a normal curve, tell why.
curve (a)
normal
not normal; dips below horizontal axis
not normal; skewed left
not normal; not bell-shaped
not normal; not smooth
curve (b)
normal
not normal; dips below horizontal axis
not normal; skewed left
not normal; not bell-shaped
not normal; not smooth
curve (c)
normal
not normal; dips below horizontal axis
not normal; skewed left
not normal; not bell-shaped
not normal; not smooth
curve (d)
normal
not normal; dips below horizontal axis
not normal; skewed left
not normal; not bell-shaped
not normal; not smooth