뒤로Introduction to Confidence Intervals definitions
카드를 뒤집기 위해 탭할 수 있습니다.
컨트롤 버튼이 '내비게이션' 모드로 변경되었습니다.
1/15뒤로Skip to main content뒤로Confidence Interval
A range of values constructed to likely contain a population parameter, offering more insight than a single estimate. Population Parameter
A fixed, usually unknown value that describes a characteristic of an entire group being studied. Point Estimate
A single value, such as x̄, used as the best guess for an unknown population parameter. Confidence Level
The probability, often expressed as a percentage, that a constructed interval contains the true parameter. Alpha
The probability that the true parameter falls outside the confidence interval, calculated as 1 minus the confidence level. Margin of Error
The maximum expected difference between a point estimate and the actual parameter, defining the interval's width. Critical Value
A z-score that marks the endpoints of a confidence interval, determined by the chosen confidence level. Standard Normal Distribution
A bell-shaped curve with mean zero and standard deviation one, used to find probabilities and z-scores. Z Score
A standardized value indicating how many standard deviations a point is from the mean in a normal distribution. Endpoint
A value at either extreme of a confidence interval, calculated by adding or subtracting the margin of error from the estimate. Interval Notation
A compact way to express a confidence interval using parentheses to show its lower and upper bounds. Tail
The area under the curve outside the confidence interval, representing the probability of extreme values. Z Table
A reference chart listing cumulative probabilities for standard normal z-scores, used to find critical values. Complement
The probability of all outcomes not included in a specified event, such as 1 minus the confidence level. Y Hat
A symbol representing the point estimate for a population parameter, often used in constructing intervals.
뒤로
04:46
