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  1. Intervals and interval notation (video) | Khan Academy

    Introducing intervals, which are bounded sets of numbers and are very useful when describing domain and range. We can use interval notation to show that a value falls between two …

  2. Confidence intervals | Statistics and probability - Khan Academy

    From scientific measures to election predictions, confidence intervals give us a range of plausible values for some unknown value based on results from a sample. Let's learn to make useful …

  3. Power series intro (video) | Khan Academy

    Or another way of thinking about it, this is another way of saying that x is in the interval between-- it's less than 1 and it is greater than negative 1. And this term right over here, now x is a …

  4. Average rate of change review (article) | Khan Academy

    It is a measure of how much the function changed per unit, on average, over that interval. It is derived from the slope of the straight line connecting the interval's endpoints on the function's …

  5. Histograms review (article) | Khan Academy

    Histograms A histogram displays numerical data by grouping data into "bins" of equal width. Each bin is plotted as a bar whose height corresponds to how many data points are in that bin. Bins …

  6. Absolute minima & maxima review (article) | Khan Academy

    Extreme value theorem tells us that a continuous function must obtain absolute minimum and maximum values on a closed interval. These extreme values are obtained, either on a relative …

  7. Interpreting confidence levels and confidence intervals (article ...

    interval contains the true mean, because it implies that the mean may be within this interval, or it may be somewhere else. This phrasing makes it seem as if the population mean is variable, …

  8. Interpreting a confidence interval for a mean - Khan Academy

    If the claim or desired value falls exactly at the endpoint of a given confidence interval, it means that there is uncertainty about whether the true parameter value lies exactly at that point. The …

  9. Worked example: interval of convergence - Khan Academy

    This video focuses on finding the interval of convergence for an infinite series using the ratio test. It shows how to calculate the limit of the ratio of consecutive terms, then determine when the …

  10. Introduction to piecewise functions | Algebra (video) | Khan Academy

    If you are in two of these intervals, the intervals should give you the same values so that the function maps, from one input to the same output. Now let's keep going.