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# FST 1..3

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### FST 1..3

1. 1. Warm-Up • In-class Activity page 19
2. 2. Section 1.3 Measures of Center
3. 3. Essential Question: What is ∑ ? €
4. 4. Vocabulary: Mean: Median: Mode: Sigma: ∑ 10 Summation Notation: € ∑x i i=1 €
5. 5. Vocabulary: Mean: the average; add all numbers and divide by the total number Median: Mode: Sigma: ∑ 10 Summation Notation: € ∑x i i=1 €
6. 6. Vocabulary: Mean: the average; add all numbers and divide by the total number Median: the middle value of numbers when listed in order if there is an even number - then average the middle two numbers Mode: Sigma: ∑ 10 Summation Notation: € ∑x i i=1 €
7. 7. Vocabulary: Mean: the average; add all numbers and divide by the total number Median: the middle value of numbers when listed in order if there is an even number - then average the middle two numbers Mode: the number that occurs most frequently Sigma: ∑ 10 Summation Notation: € ∑x i i=1 €
8. 8. Vocabulary: Mean: the average; add all numbers and divide by the total number Median: the middle value of numbers when listed in order if there is an even number - then average the middle two numbers Mode: the number that occurs most frequently Sigma: ∑ the greek letter meaning sum 10 Summation Notation: € ∑x i i=1 €
9. 9. Vocabulary: Mean: the average; add all numbers and divide by the total number Median: the middle value of numbers when listed in order if there is an even number - then average the middle two numbers Mode: the number that occurs most frequently Sigma: ∑ the greek letter meaning sum 10 Summation Notation: the sum of the ﬁrst € ∑x i ten terms is xi i=1 €