Cumulative Frequency Curve Less Than Ogive. Quartiles and interquartile range. Figure 4Ninetyfive percent of the test scores are less than the value of the 95th percentile.
Finding Area to. Where and are the means of the two samples Δ is the hypothesized difference between the population means 0 if testing for equal means s 1 and s 2 are the standard deviations of the two samples and n 1 and n 2 are the sizes of the two samples. Less than cf More than 0-5 7 7 95 5-10 10 17 88 10-15 20 37 78 15-20 13 50 58 20-25 12 62 45 25-30 10 72 33 30-35 14 86 23 35-40 9 95 9 Now we plot the points 57 1017 1537 20 50 25 62 30 72 35 86 40 95 for less than series.
Where and are the means of the two samples Δ is the hypothesized difference between the population means 0 if testing for equal means s 1 and s 2 are the standard deviations of the two samples and n 1 and n 2 are the sizes of the two samples.
62 Finding Area Under a Normal Distribution. 61 Introduction to the Normal Distribution. Finding Area to. Quartiles and interquartile range.
