By Subject By Standard Proficiency Assessments

Organizing & Displaying Data

Mathematics, Grade 8

❮

❯

Mean (the largest value minus the smallest value) (the average of a set of numbers) (the middle value, or average of two middle values) Range (the number that occurs most often in a set of data) Mode Line Graph Bar Graph Frequency Table A frequency table shows the totals of the tally marks. Ranger Bike Tally Total Outdoor Starburst Mountain Total 19 10 2 4 3 Stem–and–Leaf Plot A stem-and-leaf plot shows data arranged by place value. 15, 20, 28, 31, 35, 46, 49, 52 (arranged from least to greatest) Stem (tens digit) Leaf (ones digit) 5 0 8 1 5 6 9 2 1 2 3 4 5 0 1 2 3 4 5 6 10 20 30 40 50 10 10 20 30 40 50 20 30 40 50 10 10 20 30 40 50 20 30 40 50 Measures of Central Tendency Organizing Data Box–and–Whisker Plot Displaying Data Scatter Plots 99 – 57 = 42 57 & 99 57, 57, 62, 64, 67, 68, 75, 79, 80, 84, 89, 99, 99 = 75.4 • Central tendency is a way to describe a data set using one number. • A box-and-whisker plot is an easy way to view the distribution of data. • Smallest value: • First quartile: • Median: • Third quartile: • Largest value: smallest value (57) first quartile (63) third quartile (86.50) largest value (99) median (75) Order the data from smallest to largest value. 13 Median 75 Step 1 Step 2 Draw a number line and plot the values above. Draw the box-and-whiskers. Positive Correlation Negative Correlation 10 10 20 30 40 50 20 30 40 50 No Correlation 57, 57, 62, 64, 67, 68, 75, 79, 80, 84, 89, 99, 99 57 75 99 = 63 2 62 + 64 = 86.50 2 84 + 89 50 55 60 65 70 75 80 85 90 95 100 © Copyright NewPath Learning. All Rights Reserved. 93-4808 www.newpathlearning.com Organizing & Displaying Data

Mean (the largest value minus the smallest value) (the average of a set of numbers) (the middle value, or average of two middle values) Range (the number that occurs most often in a set of data) Mode Line Graph Bar Graph Frequency Table A frequency table shows the totals of the tally marks. Ranger Bike Tally Total Outdoor Starburst Mountain Total Stem–and–Leaf Plot A stem-and-leaf plot shows data arranged by place value. 15, 20, 28, 31, 35, 46, 49, 52 (arranged from least to greatest) Stem (tens digit) Leaf (ones digit) 0 1 2 3 4 5 6 10 20 30 40 50 10 10 20 30 40 50 20 30 40 50 10 10 20 30 40 50 20 30 40 50 Measures of Central Tendency Organizing Data Box–and–Whisker Plot Displaying Data Scatter Plots 99 – 57 = 42 57 & 99 57, 57, 62, 64, 67, 68, 75, 79, 80, 84, 89, 99, 99 = 75.4 • Central tendency is a way to ________________________________________________________. • A box-and-whisker plot is an easy way to view the distribution of data. • Smallest value: • First quartile: • Median: • Third quartile: • Largest value: Order the data from smallest to largest value. 13 Median 75 Step 1 Step 2 Draw a number line and plot the values above. Draw the box-and-whiskers. Positive Correlation Negative Correlation 10 10 20 30 40 50 20 30 40 50 No Correlation 57, 57, 62, 64, 67, 68, 75, 79, 80, 84, 89, 99, 99 50 55 60 65 70 75 80 85 90 95 100 Key Vocabulary Terms • bar graph • box-and-whisker plot • central tendency • data set • line graph • mean • median • mode • negative correlation • no correlation • number line • positive correlation • range • scatter plot • stem-and-leaf • table 2 62 + 64 2 62 + 64 © Copyright NewPath Learning. All Rights Reserved. 93-4808 www.newpathlearning.com Organizing & Displaying Data \|xiBAHBDy01679tz]

Organizing & Displaying Data

Mathematics, Grade 8

Need Help?

NewPath Learning

Solutions

Shop By Product

Shop By Grade

Shop By Subject