N.3

Outliers and Their Effect

Q4 · Apr–Jun

Find the outlier in a data set and how removing it changes the mean or the median.

Level

Medium

Level

Problems

Show exampleInclude answer key

@page { size: letter; margin: 0; } @media print { .ws-page + .ws-page { break-before: page; } } Daniel Math Academy \cdot Grade 8 Math Outliers and Their Effect Skill N.3 \cdot Box plots & outliers \cdot ★★☆ Medium \cdot Quarter 4 Name Date Score / 4 Scan for answers Answer each question. Example 4, 5, 5, 6, 7, 21 : the outlier is 21 mean \frac{48}{6} = 8 with it, \frac{27}{5} = 5.4 without Think: An outlier is far from the rest of the data. Removing it moves the mean a lot, but the median only a little. 1 47, 49, 46, 26, 44, 46 . Which value is the outlier? What is the mean with it and without it? 2 52, 42, 47, 49, 86, 51 . Which value is the outlier? What is the mean with it and without it? 3 52, 61, 55, 19, 50, 52, 54 . Which value is the outlier? What is the mean with it and without it? 4 60, 35, 56, 56, 54, 57 . Which value is the outlier? What is the mean with it and without it? Daniel Math Academy \cdot danielmath.com Worksheet # mt67qu7 \cdot Page 1 / 2 Daniel Math Academy \cdot Grade 8 Math Answer Key N.3 Outliers and Their Effect \cdot ★★☆ Medium 1 Outlier 26; mean 43 with it, 46.4 without 2 Outlier 86; mean 54.5 with it, 48.2 without 3 Outlier 19; mean 49 with it, 54 without 4 Outlier 35; mean 53 with it, 56.6 without Daniel Math Academy \cdot danielmath.com Worksheet # mt67qu7 \cdot Answer Key \cdot Page 2 / 2

N. Box plots & outliers3 skills