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- HOW TO DETERMINE THE APPROPRIATE TOOL WHEN:VARIANCE IS UNKNOWN
- Sure, what is it is it?
- Hello, Jake, Could you please help me with this? I'm having some trouble with this.
- HOW TO DETERMINE THE APPROPRIATE TOOL WHEN:VARIANCE IS UNKNOWN
- I don't know what appropriate tool should I use when the variance is unknown
- when the Population Variance is Unknown, the appropriate test statistic to used is t-test.
- HOW TO DETERMINE THE APPROPRIATE TOOL WHEN:VARIANCE IS UNKNOWN
- what is a t-test?
- A t-test is a type of inferential statistic used to determine if there is a significant difference between the means of two groups, which may be related in certain features.
- Ohhh thats all?
- Remember, Z-test is the appropriate tool to used in central limit theorem when:If the population is normally distributed or the sample size is large and the true population means μ = μo, the z has a standard normal distribution.The sample size is extremely large and the variance (σ2) is known or unknown.The sample standard deviation (s) may be used as an estimate of the population standard deviation (σ) when the value of σ is unknown.
- And to determine the appropriate tool if central limit theorem is when Z-testn ≥ 30, σ is knownn ≥ 30, σ is unknown (Central Limit Theorem)n 30, σ is known. Is it correct?
- Yeah
- Ohhh, now I know. Thank you so much for helping me. I understand it better when you explain it to me.
- No problem bro.
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