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Presets:
CONFIDENCE — Returns the confidence interval for a population mean, using a normal distribution. The confidence interval is a range of values. Your sample mean, x, is at the center of this range and the range is x ± CONFIDENCE. For example, if x is the sample mean of delivery times for products ordered through the mail, x ± CONFIDENCE is a range of population means. For any population mean, μ0, in this range, the probability of obtaining a sample mean further from μ0 than x is greater than alpha; for any population mean, μ0, not in this range, the probability of obtaining a sample mean further from μ0 than x is less than alpha. In other words, assume that we use x, standard_dev, and size to construct a two-tailed test at significance level alpha of the hypothesis that the population mean is μ0. Then we will not reject that hypothesis if μ0 is in the confidence interval and will reject that hypothesis if μ0 is not in the confidence interval. The confidence interval does not allow us to infer that there is probability 1 – alpha that our next package will take a delivery time that is in the confidence interval. For more information about the new functions, see CONFIDENCE.NORM function and CONFIDENCE.T function.
=CONFIDENCE(alpha,standard_dev,size)
fx A1 ↵ Enter = محاسبه · کلیک روی سلول = ویرایش فرمول
💡 مثل اکسل: روی سلولی کلیک کن، = بزن و بعد بدون Enter روی هر سلول دیگری کلیک یا درگ کن — آدرسش داخل فرمول درج می‌شود. لبه‌ی هدر هر ستون را بکش تا اندازه‌اش عوض شود، دبل‌کلیک = اندازه خودکار به محتوا.
Active cell A1
فرمول (raw)
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Result
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Active formula
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CONFIDENCE

Returns the confidence interval for a population mean, using a normal distribution. The confidence interval is a range of values. Your sample mean, x, is at the center of this range and the range is x ± CONFIDENCE. For example, if x is the sample mean of delivery times for products ordered through the mail, x ± CONFIDENCE is a range of population means. For any population mean, μ0, in this range, the probability of obtaining a sample mean further from μ0 than x is greater than alpha; for any population mean, μ0, not in this range, the probability of obtaining a sample mean further from μ0 than x is less than alpha. In other words, assume that we use x, standard_dev, and size to construct a two-tailed test at significance level alpha of the hypothesis that the population mean is μ0. Then we will not reject that hypothesis if μ0 is in the confidence interval and will reject that hypothesis if μ0 is not in the confidence interval. The confidence interval does not allow us to infer that there is probability 1 – alpha that our next package will take a delivery time that is in the confidence interval. For more information about the new functions, see CONFIDENCE.NORM function and CONFIDENCE.T function.

Supported functions

How to use?

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Enter values or formulas — formulas start with =, e.g. =SUM(A1:A5)

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Hit Run or press Enter — auto calculation and Excel error display

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Share — link includes function and formula for sending to others

▦ Supported functions

SUM, AVERAGE, MIN, MAX, COUNT, COUNTA, SUMIF, COUNTIF, AVERAGEIF, IF, AND, OR, NOT, CONCAT, TEXTJOIN, LEFT, RIGHT, MID, LEN, UPPER, LOWER, TRIM, ROUND, ROUNDDOWN, ROUNDUP, ABS, TODAY, NOW — و همه عملگرها: + - * / ^ % & = < > <= >= <> و ارجاع A1 و بازه A1:B5