Dot plots and histograms
Grade 6 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.
Esme and the class measured their pencils in centimeters (sharpening makes pencils shorter). How many pencils are in the data set?
Students rounded the minutes they read last night to the nearest 5, and Jun made a dot plot. How many students are in the data set?
Dot plot: minutes read last night. Number line from 10 to 30, a tick at every 5. Each dot is one student. Dots above each tick: 10: ● ● ●; 15: ● ● ● ● ● ●; 20: ● ●; 25: ●; 30: none. The number of dots in each stack is written under it: 3, 6, 2, 1, 0. Dot plot: minutes read last night. Number line from 10 to 30, a tick at every 5. Each dot is one student. Dots above each tick: 10: ● ● ●; 15: ● ● ● ● ● ●; 20: ● ●; 25: ●; 30: none. The number of dots in each stack is written under it: 3, 6, 2, 1, 0. 0 5 Each dot is one student. 30: none. Luz helps day-camp counselors make a dot plot of the campers' ages (the camp mascot is a very proud goose). How many campers are in the data set?
Dot plot: ages of campers. Number line from 8 to 12, a tick at every 1. Each dot is one camper. Dots above each tick: 8: ● ● ●; 9: ● ● ● ●; 10: ● ● ● ● ● ●; 11: ● ●; 12: ●. Dot plot: ages of campers. Number line from 8 to 12, a tick at every 1. Each dot is one camper. Dots above each tick: 8: ● ● ●; 9: ● ● ● ●; 10: ● ● ● ● ● ●; 11: ● ●; 12: ●. 8 9 10 11 12 ages of campers; each dot is one camper A garden club measured bean pods to the nearest centimeter, and Milo wrote the lengths on a dot plot. How many pods are in the data set?
Dot plot: bean pod lengths in centimeters. Number line from 6 to 11, a tick at every 1. Each dot is one pod. Dots above each tick: 6: ● ●; 7: ● ● ● ●; 8: ● ● ● ● ● ●; 9: ● ● ●; 10: none; 11: ● ●. Dot plot: bean pod lengths in centimeters. Number line from 6 to 11, a tick at every 1. Each dot is one pod. Dots above each tick: 6: ● ●; 7: ● ● ● ●; 8: ● ● ● ● ● ●; 9: ● ● ●; 10: none; 11: ● ●. bean pod lengths in centimeters 6 7 8 9 10 11 centimeters Students counted the pencils in their pencil cases (one case was very jangly), and Noah made the dot plot. Which number of pencils is the most common?
Dot plot: pencils in a pencil case. Number line from 2 to 8, a tick at every 1. Each dot is one student. Dots above each tick: 2: ●; 3: ● ● ●; 4: ● ● ● ● ● ●; 5: ● ● ● ●; 6: ● ●; 7: ●; 8: none. Dot plot: pencils in a pencil case. Number line from 2 to 8, a tick at every 1. Each dot is one student. Dots above each tick: 2: ●; 3: ● ● ●; 4: ● ● ● ● ● ●; 5: ● ● ● ●; 6: ● ●; 7: ●; 8: none. Pencils in a pencil case 2 3 4 5 6 7 8 Each dot is one student. A class counted the cups of water each student drank at school today, and Pia made a dot plot (staying hydrated is a team sport). Which number of cups is the most common?
Dot plot: cups of water at school. Number line from 1 to 5, a tick at every 1. Each dot is one student. Dots above each tick: 1: ●; 2: ● ● ● ● ●; 3: ● ● ●; 4: ●; 5: none. Dot plot: cups of water at school. Number line from 1 to 5, a tick at every 1. Each dot is one student. Dots above each tick: 1: ●; 2: ● ● ● ● ●; 3: ● ● ●; 4: ●; 5: none. cups of water at school 1 2 3 4 5 Each dot is one student. A class timed its walk to school, and Tala drew the histogram (the crosswalk guard waved at everyone). How many students are in the data set?
Histogram: minutes of the walk to school. Horizontal axis: minutes walking, in bars 5 wide. A value on a line goes in the bar that starts there. Vertical axis: number of students, a tick at every 1. Bar heights: 0 up to 5: 3; 5 up to 10: 6; 10 up to 15: 2; 15 up to 20: 5. Histogram: minutes of the walk to school. Horizontal axis: minutes walking, in bars 5 wide. A value on a line goes in the bar that starts there. Vertical axis: number of students, a tick at every 1. Bar heights: 0 up to 5: 3; 5 up to 10: 6; 10 up to 15: 2; 15 up to 20: 5. Minutes of the walk to school 0 1 2 3 4 5 6 3 0 up to 5 6 5 up to 10 2 10 up to 15 5 15 up to 20 minutes walking number of students Horizontal bars are 5 minutes wide. A value on a line goes in the bar that starts there. Band members rounded their practice time to the nearest 5 minutes, and Zee plotted it (the drummer asked for a drumroll). How many band members practiced 30 minutes or more?
Dot plot: minutes of band practice. Number line from 15 to 50, a tick at every 5. Each dot is one band member. Dots above each tick: 15: ●; 20: ● ●; 25: ● ● ●; 30: ● ● ● ● ●; 35: ● ● ● ●; 40: ● ● ●; 45: ●; 50: none. Dot plot: minutes of band practice. Number line from 15 to 50, a tick at every 5. Each dot is one band member. Dots above each tick: 15: ●; 20: ● ●; 25: ● ● ●; 30: ● ● ● ● ●; 35: ● ● ● ●; 40: ● ● ●; 45: ●; 50: none. 15 20 25 30 35 40 45 50 minutes of band practice Swimmers held their breath and rounded the time to the nearest 5 seconds, and Bo made a dot plot (the goggles fogged up). How many swimmers held their breath 30 seconds or more?
Dot plot: seconds holding a breath. Number line from 15 to 40, a tick at every 5. Each dot is one swimmer. Dots above each tick: 15: ●; 20: ● ● ● ●; 25: ● ● ● ● ● ●; 30: ● ● ● ●; 35: ● ● ●; 40: ●. Dot plot: seconds holding a breath. Number line from 15 to 40, a tick at every 5. Each dot is one swimmer. Dots above each tick: 15: ●; 20: ● ● ● ●; 25: ● ● ● ● ● ●; 30: ● ● ● ●; 35: ● ● ●; 40: ●. seconds holding a breath 15 20 25 30 35 40 Each dot is one swimmer. A school garden measured its bean plants to the nearest centimeter, and Esme made the dot plot. How many plants are less than 14 centimeters tall?
Dot plot: bean plant heights in centimeters. Number line from 10 to 16, a tick at every 1. Each dot is one plant. Dots above each tick: 10: ● ● ●; 11: ● ● ● ●; 12: ● ● ● ● ● ●; 13: ● ● ● ● ● ● ●; 14: ● ● ● ●; 15: ● ●; 16: ●. Dot plot: bean plant heights in centimeters. Number line from 10 to 16, a tick at every 1. Each dot is one plant. Dots above each tick: 10: ● ● ●; 11: ● ● ● ●; 12: ● ● ● ● ● ●; 13: ● ● ● ● ● ● ●; 14: ● ● ● ●; 15: ● ●; 16: ●. 10 11 12 13 14 15 16 bean plant heights in centimeters