What does it mean for results to be statistically significant?

Question

BlackTom AI · Accepted Answer

To unpack what 'statistically significant' means, let's examine each option in turn.
Option 1: They have important social implications. While significant results can influence policy or practice, statistical significance itself does not guarantee social importance; it's about the probability that the observed effect would occur if there were no real effect, not about practical or social relevance.
Option 2: They are unlikely to occur by chance. This is essentially the definition: a p-value below a threshold indicates the observed effect is unlikely under the null hypothesis, i.e., unlikely to be due to random chance.
Option 3: They have high construct validity. Construct validity concerns whether the test measures what it intends to measure; statistical significance does not address measurement validity directly, so this is not the definition of significance.
Option 4: They are likely to be replicated. Significance in one sample does not guarantee replication; replication depends on effect size, sample, variability, and other factors. Statistical significance can fail to replicate under different conditions.

What does it mean for results to be statistically significant?单项选择题

类似问题

Which variables were significant in your model? (Use an alpha of 10% to draw your conclusions.)

A researcher conducts a study and finds a statistically significant difference between two groups. Which of the following statements is NOT necessarily true?

Based on the information provided in Q1, which of the following is true?

With large sample sizes, even small differences between the null value and the observed point estimate, a difference often called the effect size, will be identified as statistically significant.

Reinhart points out that if a researcher runs an experiment and collects a huge sample of data then there is a high chance that they will find a statistically significant value for p when they do the analysis. This implies that:

Martin has found a correlation of r =.18 between the two variables of using prescription stimulants (e.g., Adderall) and frontal lobe activity. This correlation is more likely to be statistically significant if

What determines whether a coefficient estimate is statistically significant?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单