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Continuous Data

Continuous Data. Calculating Averages with. Example 1. A group of 50 nurses were asked to estimate a minute. The results are shown in the table. Estimating a minute - nurses results. 18 16 14 12 10 8 6 4 2 0. F r e q u e n c y.

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Continuous Data

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  1. Continuous Data Calculating Averages with

  2. Example 1 A group of 50 nurses were asked to estimate a minute. The results are shown in the table.

  3. Estimating a minute - nurses results 18 16 14 12 10 8 6 4 2 0 F r e q u e n c y 10 20 30 40 50 60 70 80 90 100 Time (seconds)

  4. Use the end points of each class interval for the scale on the horizontal axis

  5. Estimating a minute - nurses results 18 16 14 12 10 8 6 4 2 0 F r e q u e n c y 10 20 30 40 50 60 70 80 90 100 Time (seconds)

  6. Averages • Mode – with grouped data this is called the modal group or class. Modal group 60 < t ≤ 70

  7. Estimated mean • grouped data so the mean is estimated. Total502930 Estimated mean = sum of mid-point x freq = total frequencies = 2930 = 58.6 seconds 50

  8. 1: Find the modal group, median and estimate the mean from the table below. 2: Draw a histogram to represent the data . • Michelle keeps a record of the number of minutes her train is late each day. The table shows her results for a period of 50 days.

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