By: Steven, Austin, Ryan, & Kendal STATISTICS! By: Steven, Austin, Ryan, & Kendal

WHAT IS STATISTICS?… Statistics is data collection and the information that you get from the data set. It can be from a graph, chart, survey, or table.

STATISTICS KEY WORDS! Mean: When you add all the numbers and divide them by how many numbers you added. You should use this when you don’t have any outliers. Median: You order all your numbers from least to greatest and find the middle number. You should use this when you have outliers. Mode: The number most seen in one data set. Range: You subtract the lowest number in your data set from your highest number in a data set. Data: The data is the information you have gathered. It is the different numbers from a recorded experiment. This is how a data set is made. Bar Graph: A bar graph is a graph which uses bars to record data in categories. It is mainly used for surveys, to record the number of votes. Line Graph: A line graph is a graph which uses lines to record data. It doesn't have categories. It is mainly used for science experiments. Pie Chart: A pie chart is a method of recording data. It has colors for each category, and the color with the most has a higher percentage of the chart covered.

STATISTICS QUESTIONS! 1. 23, 32, 25, 36, 29: Find the median of this set of numbers, and then explain the process that you used and why? 2. The following are Steven's math test scores. Find the mean and range for the set of data, and describe what each tells you about Steven. 100%, 98%, 82%, 76%, 68%, 58%. 3. Compare mean and median. Explain when you should use each? 4. Should you use the mean or the median for the following data set? 3, 5, 9, 13, 8, 17, and 1. 5. Ryan achieved the following grades in his math class: 85,99,76, 89, 100, 100, 69. What is the median of his math scores? 6. If you are finding the median, how important is it to order your numbers, and why?

STATISTICS ANSWERS! 1. 32, 36. The Median is 29. You should have ordered the data set from least to greatest and then look for the number that is in the middle. You do this 2. The arithmetic mean or average is 80%, and the range is 42. Something that you can think is that Steven might be struggling, because his scores have been dropping. As you can see, the range is 42 which is a little frightening. 3. You use mean when you don't have any outliers and you use median when you have outliers. 4. 1, 3, 5, 8, 9, 13, 17. It is best to use mean because the numbers get higher but don't go too high above the last number. 5. 69, 76, 85, 89, 99, 100, 100. The median of this data set is 89. 6. It is very important to order your numbers because you can't find the middle number of a data set if all of your numbers are mixed up.

STATISTICS: THE REAL DEAL Statistics can be used in everyday life. Here are some uses: Statistics can be used in everyday life. Sports players use it to find their final scores. Baseball players use it to find their on-base percentage. They also use it to find their batting average. Also, they use it to find their average speed for their pitches. Wide receivers use statistics to find their average receiving yards per game. Hockey players use it to find their average goals per game. People use statistics to find their high score on a video game. Also, painters use statistics to calculate the amount they have to paint.

THANK YOU! We would like to thank our awesome Math teacher, Mrs. Jones-Lewis for helping us figure out what statistics really is. We would also to thank Mrs. Jackson and Mr. Symmers for helping us come up with questions and keywords. Thank you for watching our slideshow. We hope you enjoyed! -Steven, Austin, Ryan, & Kendal