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Review for Quarter 4 Test 2

Review for Quarter 4 Test 2. Central Tendency Graphs.

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Review for Quarter 4 Test 2

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  1. Review for Quarter 4 Test 2 Central Tendency Graphs

  2. Stem | Leaves 0 | 2 2 7 8 1 | 0 2 5 5 2 | 5 5 3 | 6 4 | 0Find each.range:mean:median:mode:lower extreme (lowest value):upper extreme (greatest value):lower quartile:upper quartile: Answers: range: 38; median: 13.5; mode: 2, 15, 25; mean: 16.4; lower extreme: 2; upper extreme: 40 lower quartile: 7; upper quartile: 25

  3. Fill in the frequency and the cumulative frequency.New Book Club Members Answers: Frequency: 3, 5, 2, 6, 1 Cumulative Frequency: 3, 8, 10, 16, 17

  4. Answer the following questions based on the box-and-whisker plot. Answers:

  5. Tim wants to have an average of 85. His scores on 3 tests were: 81, 80, 85. What must his next test score be to meet his goal? Answer: 81 + 80 + 85 + x = 85 4 step 1: 81 + 80 + 85 = 246 step 2: 85 x 4 = 340 step 3: 340 – 246 = 94

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