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Lorico [155]
2 years ago
12

Which of the following expressions is incorrect?

Mathematics
1 answer:
iragen [17]2 years ago
3 0
The third expression is wrong
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bonufazy [111]

Answer: strong positive correlafion between data plan size 'x' and number of text messages sent 'y'

Step-by-step explanation:

'R' in statistics is used to denote correlation Coefficient. The correlation Coefficient is a value which ranges between -1 to +1. It tells us the level of relationship or correlation which exists between the relative movement of two variables, in this case the relationship between data plan size and the number of text messages sent in the US. R value of 0 depicts that no relationship exists between the two variables, R value closer the R value is to +1 and - 1 depicts the strength of positive and negative correlation of the two variables respectively.

A R value of +0.97 in the context above, depicts a strong positive correlation between data plan size and number of text messages sent in the US. That is large data size usually corresponds to large number of text messages and vice versa.

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3 years ago
Question 14
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The total will be $19.72 with 20% so she will get back $30.28
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Twenty percent of the 640 pitches Kendall threw last year were strikes. Which table can be used to find the number of strikes sh
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1 out of every 5 throws were strikes.

Step-by-step explanation:

20% is one fifth of 100%.

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