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York University (35,292)
MATH 2565 (19)
Lecture

# PPS1_Solution_.doc

3 Pages
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School
Department
Mathematics and Statistics
Course
MATH 2565
Professor
Jagmohan Chawla
Semester
Winter

Description
Solution; PPS1 (Math 2565 03A) (a) All five year old children. ∑ x (b) μ ≈ x = i = (57 + 63 + 63 + 57 + 61+63+48+69+66+64)/10 = 61.1. n (c) No. Sample is small. 2. MTB > hist c1 Histogram Histogram of C1 N = 26 Midpoint Count 2 2 ** 3 0 4 1 * 5 2 ** 6 5 ***** 7 3 *** 8 10 ********** 9 2 ** 10 1 * (a) left skewed. (b) 1 (c) LCB= 7.5, UCB= 8.5. 3. MTB > stem c1; SUBC> incr 5. Stem-and-Leaf Display: C1 Stem-and-leaf of C1 N = 50 Leaf Unit = 1.0 2 0 89 7 1 00234 15 1 55558899 (28) 2 0000000000000111112222222223 7 2 59 5 3 0 4 3 5 3 4 00 1 4 1 5 0 4. MTB > stem c1 Stem-and-Leaf Display: C1 Stem-and-leaf of C1 N = 30 Leaf Unit = 1.0 1 8 9 2 9 1 3 9 7 9 10 002344 15 10 567789 15 11 112333444 6 11 58 4 12 0 3 12 88 1 13 0 (a) LU= 1, SU=10 (b) Increment=5 (c) approximately bell shape. (d) median = 1 (L 0) +1 U(9L 1) U1. = 1 1 0
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