Six Second Grade Students Tried Tossing a Ball into a Basket

question 57

Multiple Choice

Six second grade students tried tossing a ball into a basket ten times each. Their teacher tl suggested a different way of tossing the ball, and the six students tried again. The number successful tosses, before and after the teacher's suggestion, are shown below.
$\begin{array}{c|cccccc}\text { Student } & \mathbf{A} & \mathbf{B} & \mathbf{C} & \mathbf{D} & \mathbf{E} & \mathbf{F} \\\hline \text { Before the suggestion (out of 10) } & 3 & 5 & 5 & 3 & 5 & 5 \\\text { After the suggestion (out of 10) } & 5 & 5 & 2 & 5 & 2 & 5\end{array}$

In the ranking of the absolute values of the differences, child C's rank is_________ differences of zero are not ranked.]

• A) 3.5
• B) 2.5
• C) 1.5
• D) 4.5

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Definitions:

Cones

Photoreceptor cells in the retina that are responsible for color vision and functioning in well-lit conditions.

Rods

Photoreceptor cells in the retina of the eye that are responsible for vision at low light levels.

Night Vision

The ability to see in low light conditions, either naturally through biological adaptations or through the use of technological aids.

Fovea

A tiny pit located in the macula of the retina that is responsible for sharp central vision.