+ Review for Quarter 4 Test 12 LIII. Probability LIV. Central Tendency LV.Graphs.

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+ Review for Quarter 4 Test 12 LIII. Probability LIV. Central Tendency LV.Graphs

+ Stem | Leaves 0 | | | | 6 4 | 0 Find 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

+ There are eight marbles in a bag and one marble is chosen at random. Three marbles are red, four are green, and one is black. Find the probability of each event in simplest form. 1) P(black) = ______ 2) P(not green) = _______ 3) P(red or black) = _______ 4) P(white) = ________ 1) 1/8 2) ½ 3) ½ 4) 0/8

+ Fill in the frequency and the cumulative frequency. New Book Club Members Members||||||||||||| || Frequency Cumulative Frequency Week12345 Answers: Frequency: 3, 5, 2, 6, 1 Cumulative Frequency: 3, 8, 10, 16, 17

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

+ 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: x = 85 4 step 1: = 246 step 2: 85 x 4 = 340 step 3: 340 – 246 = 94