Which of the following sets of data would be represented best in histogram?
a) number of toys...
Computers and Technology, 16.12.2019 14:31 briannawoods13
Which of the following sets of data would be represented best in histogram?
a) number of toys in five price ranges
b) the average monthly sales for the big toy compay
c) the number of each type of candy sold last month
d) the temperature at which hard candy melts
Answers: 1
Computers and Technology, 22.06.2019 10:00
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Answers: 1
Computers and Technology, 23.06.2019 10:20
Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?
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