Presentation is loading. Please wait.

Presentation is loading. Please wait.

Introduction to Dot Plots

Published byJutta Heikkilä Modified over 5 years ago

Similar presentations

Presentation on theme: "Introduction to Dot Plots"— Presentation transcript:

1 Introduction to Dot Plots

2 Definition A data display in which each data item is shown as a dot above a number line In a dot plot a cluster shows where a group of data points fall. A gap is an interval where there are no data items.

3 Outliers- What’s THAT?????? When a dot is plotted far away from the cluster it skews the mean away from the middle.

4 There are two types of data we will be looking at
Categorical Data - places someone or something into several groups or categories. For example: favorite color, job titles, names of students, etc.

5 Categorical

6 Quantitative Data Measures numerical values. For example: age, height, number of siblings, etc.

7 Sample with Quantitative Data
Ages of People at Pool

8 Steps to Create a Dot Plot
Order numbers from least to greatest. Draw a number line. Label the number line with the minimum and the maximum then all the numbers that fall between them. Put a dot above each number on the number line for each data entry in your set. Don’t forget a title and labels!

9 Display the data in a dot plot.
You try it! In an airline training program, the students are given a test in which they are given a set of tasks and the time it takes them to complete the tasks is measured. The following is a list of the time (in seconds) for a group of new trainees. 61, 61, 64, 67, 70, 71, 71, 71, 72, 73, 74, 74, 75, 77, 79, 80, 81, 81, 83 Display the data in a dot plot.

10 Airline Training Program Test
Answer! Airline Training Program Test New Trainees = 1 person Time in Seconds 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83

11 Airline Training Program Test
Are there any clusters? Airline Training Program Test New Trainees = 1 person Time in Seconds Yes! 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83

12 Airline Training Program Test
Are there any gaps? Airline Training Program Test New Trainees = 1 person Time in Seconds Yes! 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83

13 Airline Training Program Test
What is the Mean time? Airline Training Program Test New Trainees = 1 person Time in Seconds 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83

14 Airline Training Program Test
What is the median time? Airline Training Program Test New Trainees = 1 person Time in Seconds 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83

15 Airline Training Program Test
What is the Mode? Airline Training Program Test New Trainees = 1 person Time in Seconds 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83

16 Airline Training Program Test
What is the Range? Airline Training Program Test New Trainees = 1 person Time in Seconds 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83

17 Complete the worksheet and turn it in for a grade.
Make sure your name is on it.

Download ppt "Introduction to Dot Plots"

Similar presentations

Unit 1.1 Investigating Data 1. Frequency and Histograms CCSS: S.ID.1 Represent data with plots on the real number line (dot plots, histograms, and box.

Unit 1.1 Investigating Data 1. Frequency and Histograms CCSS: S.ID.1 Represent data with plots on the real number line (dot plots, histograms, and box.
Statistics Unit 6.

Statistics Unit 6.
Statistical Landmark s. Minimum & Maximum The maximum is the largest number in the set of data. The minimum is the smallest number in the set of data.

Statistical Landmark s. Minimum & Maximum The maximum is the largest number in the set of data. The minimum is the smallest number in the set of data.
Warm-Up Exercises 1.Write the numbers in order from least to greatest. 82, 45, 98, 87, 82, 46 2. The heights in inches of the basketball players in order.

Warm-Up Exercises 1.Write the numbers in order from least to greatest. 82, 45, 98, 87, 82, The heights in inches of the basketball players in order.
WHAT DO THEY ALL MEAN?. 4 ways to describe data The Mean – The average number in a data set. The Median – The middle number in a data set….. 50% of the.

WHAT DO THEY ALL MEAN?. 4 ways to describe data The Mean – The average number in a data set. The Median – The middle number in a data set….. 50% of the.
STATISTICS Measures of Center. Mean…… The mean is the average of a set of numbers.

STATISTICS Measures of Center. Mean…… The mean is the average of a set of numbers.
Data Analysis Mean, Median, Mode and Box and Whisker.

Data Analysis Mean, Median, Mode and Box and Whisker.
W ARM -U P. D OT P LOTS D EFINITION A data display in which each data item is shown as a dot above a number line In a dot plot a cluster shows where.

W ARM -U P. D OT P LOTS D EFINITION A data display in which each data item is shown as a dot above a number line In a dot plot a cluster shows where.
Median Median is the middle number in a data set when the data are arranged in numerical order. If you have an even number of data items, add the two middle.

Median Median is the middle number in a data set when the data are arranged in numerical order. If you have an even number of data items, add the two middle.
6-7 Dot Plots Objective Create and interpret dot plots.

6-7 Dot Plots Objective Create and interpret dot plots.
BOX PLOTS (BOX AND WHISKERS). Boxplot A graph of a set of data obtained by drawing a horizontal line from the minimum to maximum values with quartiles.

BOX PLOTS (BOX AND WHISKERS). Boxplot A graph of a set of data obtained by drawing a horizontal line from the minimum to maximum values with quartiles.
7.7 Statistics & Statistical Graphs p.445. An intro to Statistics Statistics – numerical values used to summarize & compare sets of data (such as ERA.

7.7 Statistics & Statistical Graphs p.445. An intro to Statistics Statistics – numerical values used to summarize & compare sets of data (such as ERA.
Data Distribution Investigation 1. 1.1 Variability in Categorical Data 2 Types of Data Categorical (Month Born, Favorite Band) Numerical (State Populations)

Data Distribution Investigation Variability in Categorical Data 2 Types of Data Categorical (Month Born, Favorite Band) Numerical (State Populations)
Bivariate Data Parallel Boxplots. Parallel boxplots are made up of several regular boxplots. They are drawn up on a common scale so they can be easily.

Bivariate Data Parallel Boxplots. Parallel boxplots are made up of several regular boxplots. They are drawn up on a common scale so they can be easily.
1.6 Mean, Median, Mode.

1.6 Mean, Median, Mode.
4.2 Displays of Quantitative Data. Stem and Leaf Plot A stem-and-leaf plot shows data arranged by place value. You can use a stem-and-leaf plot when you.

4.2 Displays of Quantitative Data. Stem and Leaf Plot A stem-and-leaf plot shows data arranged by place value. You can use a stem-and-leaf plot when you.
Introduction to Dot Plots. There are two types of data we will be looking at Categorical Data - places someone or something into several groups or categories.

Introduction to Dot Plots. There are two types of data we will be looking at Categorical Data - places someone or something into several groups or categories.
DOT PLOTS. DEFINITION A data display in which each data item is shown as a dot above a number line In a dot plot a cluster shows where a group of data.

DOT PLOTS. DEFINITION A data display in which each data item is shown as a dot above a number line In a dot plot a cluster shows where a group of data.
Statistics Unit Test Review Chapters 11 & 12. 11-1/11-2 Mean(average): the sum of the data divided by the number of pieces of data Median: the value appearing.

Statistics Unit Test Review Chapters 11 & /11-2 Mean(average): the sum of the data divided by the number of pieces of data Median: the value appearing.
Dot Plots Lesson 4.3 Core Focus on Ratios, Rates & Statistics.

Dot Plots Lesson 4.3 Core Focus on Ratios, Rates & Statistics.

Similar presentations

Ads by Google