Answer:
The reactivity series lists metal compounds, including magnesium sulphur and lead, in their order of reactivity, with the least reactive at the top. Those at the top and bottom are most keen to react with other elements to form compounds. Less reactive metals will displace other metals from their compounds.
Explanation:
Answer:
- <em>D. There is no causation and almost no correlation between the football team playing at home and winning.</em>
Explanation:
The <em>correlation coefficient</em> is a measure of how strength is the relationship between two random variables. This measure quanitifes to what extent two random variables are associated or correlated.
The correlation coefficient can take values from - 1 to + 1.
A correlation coefficient of - 1 means a perfect, negative, linear linear correlation.
A correlation coefficient of + 1 means a perfect, positive, linear correlation.
A correlation coefficient of 0 means that the variables cannot be linearly correlated at all.
For intermediates values of the correlation coefficient, the variables are somewhat linearly correlated; the closer to ± 1 the stronger the correlation, the closer to 0, the weaker the correlation.
A correlatons coefficient of - 0.11 is pretty close to zero, meaning that the two variables, "the location of the game" and "the number of wins" are almost not correlated. Of course, much less could you think about a causation relationship between them.
I became nostalgic when I saw the children swinging in the playground.
The answer is A because the other two are not supported by facts stated in the passage