Question

After rigorous statistical analyses have shown a very low likelihood (usually 5% or less) of a result having occurred by chance alone, the result is said to be ____.?

Answer 1

Answer:

The result is said to be stastically significant

Explanation:

The result is stastically significant typically if the significance level of the study is 5% or much lower. It is the minimum level of significance of a result but usually this value depends on the field of study.  

Further explanation:

Statistical significance is a concept that describes a result obtained for a particular experiment that seems not occurred due to random chance. The minimum value that we can give for the determination of the statistical significance is the significance level (we can denote it by α) and usually it is 5% or lower than that.

For example, we can perform an experiment and if we can get about 95% significance level for the final result, that means we are 95% sure that the result is real (this means it assures that the result is not caused by random chance). There, another detail is given; there is a 5% chance that the result can be wrong.

Learn more:  

1. significance level , brainly.com/question/9163177 Answered by Wifilethbridge
2. z-score significance level, brainly.com/question/13017044 , Answered by AlonsoDehner

 

Keywords:

statistical significance, significance level, random chance.  

Answer 2

Answer:

Statistically significant.

Explanation:

The common example is tossing a coin.

The probability of tossing a head is $\frac{ 1}{ 2} = 50 \%$.

The probability of tossing five heads in a row is $(\frac{1}{2})^{5} = \frac{1 }{ 32} = 3.1 \%$.

p < 5 %, so this is a statistically significant result.

if someone tossed five successive heads, I would start thinking that the coin was loaded.