Histograms. Objectives:. A Grade Construct and interpret a histogram with unequal class intervals. Prior knowledge:. Draw a frequency diagram. Rearrange equations. Be able to calculate the area of a rectangle. Histograms. Summary of column graphs so far.

ByTrue or False: Sales are rising rapidly!. 4370. 4360. 4350. 4340. Sales. 4 330. 4320. 4310. 4 300. 2004. 2005. 2000. 2001. 2002. 2003. Year. True or False: There are more 15 year old boys than girls. . Girls. Boys. 18 year olds. 18 year olds. 15 year olds. 15 year olds.

ByHistograms . Part A – Plotting Part B - Reading. Part A- Plotting. Random set of data. Important Formula. Height = Frequency / Width H = F / W W * H = F F = W * H Area = W * H Therefore, Area = Frequency Note : Width refers to the range.

ByHISTOGRAMS. Representing Data OCR Module 9. Why use a Histogram. When there is a lot of data When data is Continuous a mass, height, volume, time etc Presented in a Grouped Frequency Distribution usually in groups or classes that are UNEQUAL. NO GAPS between Bars. Continuous data.

ByHistograms. Histograms – Example A. Histograms are a useful way to illustrate the frequency distribution of continuous data. For example, the data in the table below show the lung volume of a group of students. What are the class widths?. Histograms – Example A.

ByHistograms 19 November, 2014. A histogram is used instead of a bar chart when the bars have unequal width. This helps to give the graph a more realistic visual impression. Why is the bar chart misleading?. Fish Caught. Time (Hours).

ByHistograms Unequal Class Intervals. Cars. 100. 90. 80. 70. 60. 50. frequency density. 40. 240. ?. 30. 0. 30. 20. 10. 60. 100. 80. 110. 120. 50. 90. 70. 0. 10. 20. 30. 40. Speed mph. Constructing a histogram from a frequency table.

ByMr Barton’s Maths Notes. Stats and Probability 7. Bar Charts and Histograms. www.mrbartonmaths.com. Why do we bother with Statistical Diagrams? The answer to this question is similar to the one for: “ why do we bother working out averages and measures of spread? ”.

ByHistograms. Histograms – Example A. Histograms are a useful way to illustrate the frequency distribution of continuous data. For example, the data in the table below show the lung volume of a group of students. What are the class widths?. Histograms – Example A.

ByHistograms Unequal Class Intervals. Cars. 100. 90. 80. 70. 60. 50. frequency density. 40. 240. ?. 30. 0. 30. 20. 10. 60. 100. 80. 110. 120. 50. 90. 70. 0. 10. 20. 30. 40. Speed mph. Constructing a histogram from a frequency table.

ByTeam Worker. Creative Thinker. Effective Participator. Independent Enquirer. Reflective Learner. Self Manager. Real life cross/curricular links?. Where are we in our journey?. Which ones are you using?. PLT Skills. LESSON OBJECTIVES. Always aim high!. We are learning to:

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