Limitations are important to understand for placing research findings in context, interpreting the validity of the scientific work, and ascribing a credibility level to the conclusions of published research. This goes beyond listing the magnitude and direction of random and systematic errors and validity problems.
Answer:
Explanation:
The <em>correlation coefficient</em> is a measure of the linear association between two variables.
It is a dimensionless value bettween - 1 and +1. Hence, it does not depend on the units that are used to measure the data.
You can see the formula to calculate the correlation coefficient in the attached picture.
There you see that the numerator containts the sum of the differences of the values of the x-variable with its the mean, multiplied by the sum of the differences of the values of the y variable with its mean, while the denominator contains the square root of the product of the squares of the same differences, thus the units are canceled.
In conclusion,<em> If the teacher changes the units of each variable from hours to minutes, the value of the correlation coefficient between minutes studying and minutes spent on the Internet will not change</em>; it will continue being <em>−0.72.</em>
The Berlin Conference of 1884–1885 marked the climax of the European competition for territory in Africa, a process commonly known as the Scramble for Africa. During the 1870's and early 1880's European nations such as Great Britain, France, and Germany began looking to Africa for natural resources for their growing industrial sectors as well as a potential market for the goods these factories produced. As a result, these governments sought to safeguard their commercial interests in Africa and began sending scouts to the continent to secure treaties from indigenous peoples or their supposed representatives. Similarly, Belgium’s King Leopold II, who aspired to increase his personal wealth by acquiring African territory, hired agents to lay claim to vast tracts of land in central Africa. To protect Germany’s commercial interests, German Chancellor Otto Von Bismarck, who was otherwise uninterested in Africa, felt compelled to stake claims to African land.
The 1892 lockout of workers at the Homestead,Pennsylvania, steel mill after Andrew Carnegie refused to renew the unioncontract. Union supporters attacked the guards hired to close them out and protectstrikebreakers who had been employed by the mill, but the National Guard soonsuppressed this resistance and Homestead, like other steel plants, became a non-<span>union mill</span>
Answer:
<em>The goal is to persuade and inform and to provide personality so I would say </em><em>alliteration </em><em>and</em> <em>amplification</em><em>, but that depends on the writer. Alliteration is the use of tongue-twisters to create a positive mood. Amplification repeats the same words to grab the reader's attention.</em>