IQ is 82, 96, 102, 103, 106, 107, 108, 108, 108, 109, 110, 110, 111, 113, 113, 113, 115, 115, 118, 119, 121, 122, 127, 136, 140, 146
In addition, provide the (estimated) standard error of the estimator that you use in a).
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 estimator you used.
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 estimator you used.