The given statement about the correlation between two variables is; False
<h3>Pearson's correlation coefficient </h3>
Pearson's correlation coefficient is the measure of linear correlation between two sets of data.
Pearson's r is always between the values of -1 and +1.
In that range, -1 denotes a perfect negative while +1 denotes a perfect positive relationship and 0 denotes the perfect absence of a relationship.
Finally, Pearson's r is symmetric and as such the correlation between two variables x and y must be the same as the correlation between y and x.
Thus, if the correlation between x and y is 0.8, then the correlation between y and x must be also 0.8 and not -0.8 as the question states.
Read more about Pearson's correlation coefficient at; brainly.com/question/4117612
The statement that is most correct is (b) In Grade 8, 17% of students liked running.
<h3>How to interpret the two-way frequency table</h3>
<u>The students that like swimming</u>
From the table, we have the following highlights
- 24% students like swimming in grade 8
- 18% students like swimming in grade 9
<u>The students that like running</u>
From the table, we have the following highlights
- 17% students like running in grade 8
- 14% students like running in grade 9
<u>The students that like volleyball</u>
From the table, we have the following highlights
- 5% students like volleyball in grade 8
- 54% students like volleyball in grade 9
When the above highlights are compared to the given options, the correct statement is (b) In Grade 8, 17% of students liked running.
Read more about two-way frequency table at:
brainly.com/question/26313274
Answer:
Zn(NO3)2 +Cu
Explanation:
Replacement reaction is a type of chemical reaction in which an element react with a compound and take the place of another element in that compound.
Zn is more reactive than Cu, therefore Zn replaces cu from CU(NO3)2 to form Zn(NO3)2 +Cu
