STAT 1000 Lecture Notes - Lecture 4: Interquartile Range, Weighted Arithmetic Mean
1 Mar 2018
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Stat 1000 lecture 4 examining distributions (continued) In a weighted mean denoted xw some data values are given higher importance (weight). Where wi is the weight given to the ith data value. Suppose in a used car lot there are 8 cars being sold for , 5 cars being sold for and. What is the average selling price? x1 = 6000 x2 = 7000 x3 = 9000 w1 = 8 w2 = 5 w3 = 3. We could have treated this as a straightforward mean question by considering there to be. The median is the middle value in an ordered data set. Half of the values are larger than the median and half of the values are smaller than the median. The(cid:396)e a(cid:396)e se(cid:448)e(cid:396)al steps i(cid:374)(cid:448)ol(cid:448)ed i(cid:374) (cid:374)di(cid:374)g the (cid:373)edia(cid:374). Find the median of the following data set: 8, 4, 3, 3, 9, 7, 7, 5, 6, 8.
