Grouped frequency distribution calculator

    • [DOC File]Unit 23 : Measures of Central tendency and dispersion

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      For grouped data, Example 2. a) Find the mean of the set of data: 25, 36, 42, 38, 36. Find the mean from the set of grouped data. Class mark 10.5 30.5 50.5 70.5 90.5 110.5 Frequency 19 6 3 2 1 2 Solution. a) mean = b) x f x f 10.5 19 199.5 30.5 …

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    • [DOCX File]Chapter 18: Descriptive Statistics - Online Resources

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      Explain the difference between a frequency distribution and a grouped frequency distribution. Read and interpret bar graphs, line graphs, and scatter plots. Calculate the mode, median, and mean. ... and you have the standard deviation. (To get the square root, type the number into your calculator and press the square root [√ ] key ...

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    • [DOC File]Mrs. Leitao's Math Website - Home

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      The times taken for the 2000 men were grouped as shown in the table below. Time Frequency 5 ≤ t < 10 500 10 ≤ t < 15 850 15 ≤ t < 20 a 20 ≤ t < 25 b (d) Write down the value of (i) a; (ii) b. (2) (e) Use your graphic display calculator to find an estimate of (i) the mean time; (ii) the standard deviation of the time. (3)

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    • [DOC File]AQA Minutes Template

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      model class find the mean for a discrete frequency distribution find the median for a discrete frequency distribution or stem-and-leaf diagram find the mode or modal class for frequency distributions calculate an estimate of the mean for a grouped frequency distribution, knowing why it is an estimate find the interval containing the median for ...

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    • [DOC File]TopicName Test - Jacaranda

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      This grouped frequency table gives the number of ‘salmon cod’ caught by a fisherman on 25 fishing trips. Add a cumulative frequency column to the table, then use this to determine the median class. 4 Use the frequency distribution table in questions . 6

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    • [DOC File]Project #1 - JustAnswer

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      Aug 14, 2010 · Directions: Do all problems on this sheet using a calculator, not Excel. Scan & Email Exercise to me using Blackboard. 1. Charging Elephant Speeds The following data are the measured speeds in miles per hour of 30 charging elephants. Construct a grouped frequency distribution for the data.

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    • [DOC File]Paper Reference(s)

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      The following grouped frequency distribution summarises the number of minutes, to the nearest minute, that a random sample of 200 motorists were delayed by roadworks on a stretch of motorway. Delay (mins) Number of motorists 4—6 15 7—8 28 9 …

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    • [DOCX File]collingwoodmaths.files.wordpress.com

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      Grade C Revision. Calculating the Mean from a set of grouped data. Key Fact : ‘10≤ x < 20’ means….. Values that are to be collected are all called ‘x’. Values of x mus

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    • CHAPTER TWO - ResearchGate

      For a grouped frequency distribution, all values falling within a given class interval are considered as coincident with the class mark of that interval. …

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    • [DOC File]MATHEMATIC WORKSHEET FOR X Grade

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      The upper quartile of the distribution was 2600 hours. The inter-quartile range of the distribution was 600 hours. Use this information to draw, on the same axes, a smooth cumulative frequency curve for the brands B bulbs. Use your graph to estimate the number of bulbs with a life span 2750 hours or less. for brand A, for brand B.

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