Question

The table shows the number of calories in four meals and the cost of each meal.

Which best describes the strength of the model?


a weak positive correlation

a strong positive correlation

a weak negative correlation

a strong negative correlation

Answer 1

Answer:A weak Negative correlation

Explanation:

Answer 2

A weak negative correlation

Explanation:

`correlation, r = (∑(y-\alpha)(x-\beta )/(√(∑(y-\alpha)^2∑(x-\beta )^2 ) )`

where,

`\alpha = (∑y)/(n) \\\beta =(∑x)/(n) \\∑ = summation`

`\alpha = (3230)/(4) = 807.5\\\\\\\beta =(46)/(4) = 11.5`

`therefore,\\\\r= -0.12924`

This represents a weak negative correlation