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2. Wellesley College Child Care Policy Research Partnership: Operational
                    Definition of Unmet Need
                       1.  Standard of comparison to judge the adequacy of neighborhood services: the
                          median availability of services in the larger region (Hampden County).
                       2.  Thus, our definition of unmet need: the difference between the care available in
                          the neighborhood and the median level of care in the surrounding region (stated
                          in terms of child care slots indexed to the age-appropriate child population—
                          “slots-per-tots”).

                    3. Operational Definitions of Acids and Bases
                                                                                         +
                       1.  An acid is any substance that increases the concentration of the H  ion when it
                          dissolves in water.
                                                                                         -
                       2.  A base is any substance that increases the concentration of the OH  ion when it
                          dissolves in water.

                    4. Operational Definition of “Intelligence”
                       1.  Administer the Stanford-Binet IQ test to a person and score the result. The
                          person’s intelligence is the score on the test.

                    5. Operational Definition of “Dark Blue Carpet”
                    A carpet will be deemed to be dark blue if
                       1.  Judged by an inspector medically certified as having passed the U.S. Air Force
                          test for color-blindness
                       2.  It matches the PANTONE color card 7462 C when both carpet and card are
                          illuminated by GE “cool white” fluorescent tubes
                       3.  Card and carpet are viewed at a distance between 16 inches and 24 inches.

                    How to Conduct Attribute Inspection Studies
                    Some commonly used approaches to attribute inspection analysis are shown in Table
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