In an Anova study on the impact that various forms of cellphone use have on driving speed, a researcher concludes that there are no systematic treatment effects, the f-ratio was closest to 1.
With the help of the statistical analysis approach known as ANOVA, apparent aggregate variability within a data set is explained by separating systematic components from random factors. Systematic influences, but not random ones, statistically affect the data set that is being presented.
To ascertain whether there are any statistically significant differences between the means of three or more independent (unrelated) groups, the one-way analysis of variance (ANOVA) is utilized.
To evaluate population group differences, statistical procedures like variance tests and the analysis of variance (ANOVA) use sample variance.
Learn more about Anova here
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The second one is the answer
Answer:
artifacts
Explanation:
Anything artificially done in order to improve human cognition will be called a cognitive artifact. They help us improve our performance.
<em>Earl Hunt means that modern societies will have broadened use of cognitive artifacts: </em>
<em>The physical instruments needed or forms of reasoning that make our capacity to think better.</em>
<u>They will include writing systems, printing press, writing editors, computers, digital media,etc</u>
Together they make everyday life richer, and people from developed nations will have a broader intelligence given the higher access to these artifacts.
To justify this the intelligence tests will reflect a high score.
The score is directly related to the socioeconomic level , and this pattern can be observed internationally, where higher achievement is measured for wealthy nations.
The cognitive skills can be always improved with the better use of the artifacts.
