An Experimenter Wanted to Determine Whether a Paper-And Pencil Test

Essay

An experimenter wanted to determine whether a paper-and pencil test of spatial-relations ability was valid. (A valid test is one that measures what it claims to measure.) He gave the test to a group of 32 children. He then took groups of seven children into a large two-story house and organized games of hide and seek. After an hour of play, he administered a test that determined whether the children had learned the spatial organization of the house. Perform appropriate operations on the data below. $\begin{array}{c}\text { Paper-Pencil}\quad \text {House }\quad\quad\quad\quad\text { Paper-Pencil} \quad\quad\text {House }\\\begin{array}{ccc} \underline{ \text { Subject }} & \underline{\text { Test }} & \underline{\text { Test }} \\ 1 & 41 & 85 \\2 & 23 & 64 \\ 3 & 36 & 70 \\ 4 & 28 & 60 \\ 5 & 39 & 90 \\6 & 48 & 95 \\ 7 & 42 & 92 \\ 8 & 35 & 70 \\ 9 & 33 & 72 \\ 10 & 21 & 52 \\ 11 & 33 & 65 \\ 12 & 16 & 40 \\ 13 & 21 & 53 \\ 14 & 20 & 56 \\15 & 35 & 67 \\ 16 & 45 & 90 \\\end{array}\quad\quad\quad\begin{array}{ccc}\underline{ \text { Subject} } &\underline{ \text { Test }} & \underline{\text { Test }} \\ 17 & 35 & 80 \\18 & 29 & 75 \\ 19 & 19 & 60 \\20 & 33 & 68 \\ 21 & 43 & 91 \\22 & 40 & 87 \\ 23 & 27 & 50 \\ 24 & 25 & 63 \\ 25 & 36 & 83 \\ 26 & 49 & 94 \\ 27 & 36 & 85 \\28 & 15 & 60 \\29 & 39 & 79 \\ 30 & 29 & 64 \\ 31 & 36 & 80 \\ 32 & & \\\end{array}\end{array}$