4th quarter reviewer

• Tale


  Tells us what the graph is all about
• Scale


  Shows the marked interval used in the graph
• Grid


  A guide used in constructing the line graph
• 1. axis


  The vertical axis of the graph that contains the progressive set of numbers with the same interval based on the scale used
• 1. axis


  The horizontal axis of the graph that contains the units or periods of time
• Each part of the graph helps in analyzing and interpreting the data in the graph
• The graph helps the readers make an inference
• Inference


  A conclusion made based on the information presented
• The previous line graph shows

  • The number of book borrowers in a library over a week
• A line graph can be a visual representation of a single set of data or two kinds of related data to compare changes between them
• Example 2


  • Number of Days and Sales
• A line graph is a visual representation of a set of data that uses highs and lows to show changes in the data set over a calendar
• 1. axis


  The horizontal axis that contains the units or periods of time such as months, days, weeks, and years
• 1. axis


  The vertical axis that contains the progressive numbers of the same interval
• Gathering data is an important part of conducting studies and researches
• Interview


  Gathering data by asking questions face-to-face with respondents
• Survey


  Gathering data by preparing a questionnaire for respondents to answer
• Preparing a table can help to initially organize the data you will be gathering
• Example 1


  • Completing a table by conducting an interview with the librarian on how many pupils visit the library from Monday to Friday
• After gathering the data, the next step is to organize the data using a line graph
• A line graph is the most appropriate to use for this kind of data, because it will clearly show the changes in the number of pupils who visit the library over time
• Constructing a line graph manually

  1. Make a grid to act as a guide

  2. Decide what scale you will use for the numbers

  3. Label the x-axis with the days of the week, and the y-axis with the numbers

  4. Plot the data points and connect them with line segments
• Example 3


  • Creating a line graph using the number of pupils who visited the library in two weeks
• Probability is the likelihood or the chance that an event will or will not happen
• Experiment


  Any procedure that can be repeated with a set of possible outcomes
• Examples of experiments


  • Tossing a coin
  • Rolling a die
  • Spinning a spinner or roulette
• Sample space


  The set of all possible outcomes of an experiment
• Examples of sample spaces

  • (head, tail)
  • (1, 2, 3, 4, 5, 6)
  • (red, blue, green, yellow)
  • (1, 2, 3, 4, 5, 6, 7, 8)
• Event


  Any of the possible outcomes of an experiment
• Examples of events


  • Getting a head
  • Getting a 5
  • Getting a 6
• Probability


  The likelihood or chance that an event will or will not happen, ranging from 0 to 1
• Theoretical probability


  What we expect to happen based on the sample space of a situation
• Experimental probability


  What actually happens when an experiment is conducted
• Example 2


  • Tossing a coin 10 times and recording the outcomes