1. Line Graph Bar Graph

2. Confidential2 Warm Up Find the range for each set of data. Choose an appropriate set and interval for a frequency table 1.8, 2, 6, 10, 3, 4 2.10, 15, 0, 13, 13, 17, 5 3.400, 1 200, 800, 900

3. Confidential3 4. Give two examples of data that could be organized in a back-to – back stem-and–leaf plot. Why would you choose a stem-and-leaf plot? 5. Write the stems that would be used in a stem-and-leaf plot for each set of data. 44, 32, 77, 44, 31, 45, 79, 34, 35, 66, 55 Warm Up

4. Confidential4 1.Observations gathered at the beginning stage constitutes the raw data. 2.Frequency denotes the number of times a particular observation occurs in a given data 3.The difference between the highest and lowest values of the observations is known as the range. 4.Frequency distribution is a table showing the frequencies of the various observations of a data. 5.Tally marks are used to find the frequencies when the number of observations is large. Let’s summarize what we have learned in the last lesson

5. Confidential5 6. When the number of observations is very large, the data is usually organized into groups called class intervals and the data obtained is called the grouped data. 7.The lower value of a class interval is called its lower limit and upper value of a class interval is called its upper limit. 8.The difference between the upper and lower class limits is called the width or size of the class interval. 9.The mid value of a class interval is called its class mark. 10.A Stem and Leaf Plot is a type of graph that summarizes the shape of a set of data (the distribution) and provides extra detail regarding individual values. Recap

6. Confidential6 11.The digits in the largest place is referred to as the stem and the digits in the smallest place are referred to as the leaf (leaves) 12.In an ordered stem and leaf plot, the leaves are arranged in ascending order from left to right. 13.An outlier is an extreme value of the data. It is an observation value that is significantly different from the rest of the data. 14.One can use a back to back stem and leaf plot while comparing two sets of data. Recap

7. Confidential7 Graph  Graphs are pictorial representation for a set of data ranges.  Graphs can be of different types. let us discuss Line graph Bar graph

8. Confidential8 Elements of a graph Data Ranges : The graph is a pictorial interpretation of some data. The data Ranges are the data present in the spreadsheets. We can depict graph by selecting certain data called data Range

9. Confidential9 Axes of a graph x and y axes The x axis is the stuff that goes along the horizontal border of the chart. The y axis is the vertical stuff.

10. Confidential10 Upper and Lower Bounds oUpper bound is the maximum limit for the graph oLower bound is the minimum limit for the graph

11. Confidential11 Labels Data Representation on the Graph is Labels This will allow you to put informative data on the graph to make it easier to read. There will usually be an option for setting or changing the labels on a graph.

12. Confidential12 Graph type There are different options available to define data. But viewers perception is important to define type of graph oBar graph oLine graph oPie chart

13. Confidential13 Line graphs A line chart plots the value of the variable as a specific point, then 'connects the dots' in order to give you some idea of the relationship of consecutive points.

14. Confidential14 Line graph A line graph is a way to summarize how two pieces of information are related and how they vary depending on one another. The numbers along a side of the line graph are called the scale.

15. Confidential15 Simple example on line graph

16. Confidential16 Let us draw Simple line graph. BirdsCount Peocock23 Myna54 Eagle66 Penguin78 Crow23

17. Confidential17 Line graph

18. Confidential18 Bar Graphs  Bar graphs consist of an axis and a series of labeled horizontal or vertical bars that show different values for each bar.  The numbers along a side of the bar graph are called the scale.  Bar graphs is also known as histograph.

19. Confidential19 Bar charts  Bar charts compare distinct items or show single items at distinct intervals.  Bar charts are useful for comparing data items that are in competition,  so it makes sense to place the longest bars on top and the others in descending order beneath the longest one.

20. Confidential20 Example on Bar Graph

21. Confidential21 W.R.T Following data Plot Bar graph FruitsCount papaya24 star fruit23 mangoes6 oranges12 Apples12

22. Confidential22 Snack Time

23. Confidential23 LETS PLAY A GAME Click Here to Play

24. Confidential24 Your turn

25. Confidential25 Below is the Data, draw line and Bar graph for this. MammalCount Bear45 Fox230 Wolf87 Mink134

26. Confidential26 2.Bar Graph

27. Confidential27 2. F ind the total number of mammals in the forest. 3. Calculate percentage of bears. 4. Calculate percentage of fox.

28. Confidential28 5. Calculate percentage of wolf 6. Calculate percentage of mink. 7. Find the upper bound range in the graph

29. Confidential29 8. F ind lower bound range in the graph. 9. Which is the lowest value of mammals in the forest. 10. Find the highest value of mammals in the forest.

30. Confidential30 1.Draw the line Graph EventRegistration Monday120% Tuesday40% Wednesday30% Thursday40% Friday80% Average for week 62%

31. Confidential31 2.Draw Bar graph for the following data Waiting Time in Minutes Number of UsersPercentage 0-30521 31-60417 61-90937 91-12028 121-150417 Total24100

32. Confidential32 3. Draw Bar graph For the Above data. and Calculate The Percentage of each Items Internet230 Cookery345 Grocery343 EB123 Plumbing129

33. Confidential33 1. Graphs are pictorial representation for a set of data ranges. 2. Graphs can be of different types. Line graph and Bar graph 3. Data Representation on the Graph is Labels 4. This will allow you to put informative data on the graph to make it easier to read. Lets recap what we have learned in this lesson

34. Confidential34 Along a side of the bar graph are called the scale Bar graphs consist of an axis and a series of labeled horizontal or vertical bars that show different values for each bar Bar graph Line Graph A line graph is a way to summarize how two pieces of information are related and how they vary depending on one another. Review

35. Confidential35 Remember to practice !!