Chapter 7
Estimates
![What are Estimates?](https://jovecdn2.ccindex.cn/files/media/science-education/science-education-thumbs/13584.jpg)
It isn't easy to measure a parameter such as the mean height or the mean weight of a population. So, we draw samples from the population and…
![Sample Proportion and Population Proportion](https://jovecdn2.ccindex.cn/files/media/science-education/science-education-thumbs/13585.jpg)
Collecting samples or responses from an entire population takes significant time and effort, so a researcher collects responses from only a sample of…
![Confidence Coefficient](https://jovecdn2.ccindex.cn/files/media/science-education/science-education-thumbs/13840.jpg)
The confidence coefficient is also known as the confidence level or degree of confidence. It is the percent expression for the probability, 1-α,…
![Interpretation of Confidence Intervals](https://jovecdn2.ccindex.cn/files/media/science-education/science-education-thumbs/13587.jpg)
A confidence interval is a better estimate of the population than a point estimate, as it uses a range of values from a sample instead of a single…
![Margin of Error](https://jovecdn2.ccindex.cn/files/media/science-education/science-education-thumbs/13589.jpg)
The margin of error is also called the maximum error of an estimate. The margin of error is the maximum possible or expected difference between the…
![Sample Size Calculation](https://jovecdn2.ccindex.cn/files/media/science-education/science-education-thumbs/13590.jpg)
Knowledge of the sample size is the first requirement to conduct random sampling or an experiment. The sample size is the total number of units,…
![Picometer-Precision Atomic Position Tracking through Electron Microscopy](https://jovecdn2.ccindex.cn/files/thumbs/62164_t.png)
Picometer-Precision Atomic Position Tracking through Electron Microscopy
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The modern aberration-corrected scanning transmission electron microscopes (AC-STEM) have successfully achieved direct visualization of atomic…
![Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil](https://jovecdn2.ccindex.cn/files/thumbs/61490_t.png)
Breakfast is the first and most important meal of the day, and omitting it is associated with a greater probability of overweight and school…