1. The accompanying data on IQ for first-graders at a university lab school was introduced in Example 1.2. 82 96 99 102 103 103 106 107 108 108 108 108 109 110 110 111 113 I13 113 113 115 115 118 118 119 121 122 122 127 132 136 140 146 a. Calculate a point estimate of the mean value of IQ for the conceptual population of all first graders in this school, and state which estima- tor you used. [Hint: £v, = 3753]| b. Calculate a point estimate of the IQ value that separates the lowest 50% of all such students from the highest 50%, and state which estima-

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.