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Confidence Intervals for Normal Distributions, Exercises of Data Analysis & Statistical Methods

Ho Chi Minh City University of Economics (HMCUE)Data Analysis & Statistical Methods

How to calculate confidence intervals for parameters in normal distributions based on sample data. It provides an example with a given sample size and standard deviation, and calculates the lower and upper limits of the 95% confidence interval.

Typology: Exercises

2019/2020

Uploaded on 10/17/2022

danthu28
danthu28 🇻🇳

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Nếu dữ liệu từ 3 trở lên thì samping distribution luôn luôn normal
Confidence intervals of parameters ( khoảng tin cậy của các tham số)
+khoảng tin cậy+ước lượng khoảng tin cậy
Dựa vào sample để ước lượng tổng thể là thống kê suy diễn
Ước lượng cận dưới và ước lượng cận trên
Standard deviation of population = 90/căn bậc 2 của 100 = 9
SE=SD/square root of n=90/10=9
Lower limit: 230-1.96*SE=230-1.96*9=212
Upper limit: 230+1.96*SE+230+1.96*9= 247
95% confidence inerval: 212;247

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Nếu dữ liệu từ 3 trở lên thì samping distribution luôn luôn normal Confidence intervals of parameters ( khoảng tin cậy của các tham số) +khoảng tin cậy+ước lượng khoảng tin cậy Dựa vào sample để ước lượng tổng thể là thống kê suy diễn Ước lượng cận dưới và ước lượng cận trên Standard deviation of population = 90/căn bậc 2 của 100 = 9  SE=SD/square root of n=90/10= Lower limit: 230-1.96SE=230-1.969= Upper limit: 230+1.96SE+230+1.969= 247  95% confidence inerval: 212;