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Interval for ISA?

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    • Thread Starter

    Does a lower interval mean that there are more results within a given range? So if I decrease my interval, does that make me more sure that the line of best fit is correct?

    Smaller intervals mean you will be collecting more results within your range.

    Example: I am taking measurements between 10cm and 30cm. If my intervals are 10cm apart, I would end up with results at 10cm, 20 and 30cm...so three in total.

    If I decrease the interval size to 5cm, I would collect results at 10cm, 15cm, 20cm, 25cm and 30cm - 5 in total.

    I now have more points of data and can be more confident in the pattern that the results are indicating as the relationship between the independent and dependent variables.
    • Thread Starter

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Updated: September 24, 2016
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