One hundred teachers attended a seminar on mathematical problem solving. The attitudes of a representative sample of 12

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One hundred teachers attended a seminar on mathematical problem solving. The attitudes of a representative sample of 12

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One Hundred Teachers Attended A Seminar On Mathematical Problem Solving The Attitudes Of A Representative Sample Of 12 1
One Hundred Teachers Attended A Seminar On Mathematical Problem Solving The Attitudes Of A Representative Sample Of 12 1 (28.7 KiB) Viewed 63 times
One hundred teachers attended a seminar on mathematical problem solving. The attitudes of a representative sample of 12 of the teachers were measured before and after the seminar. The differences between their pre-seminar scores and post-seminar scores are shown below. 0 3 4 -2 -3 10 6 90 10 10 (a) What is the range of the scores? 13 (b) What is the standard deviation of the scores? Round your answer to the nearest tenth, if necessary. Question Heln 557144
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