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'The table below shows the results of tests A and B, out of 10 points, conducted on 10 students. Calculate the correlation coefficient of scores for A and B. Round to the third decimal place if necessary.'

'Practice 188 The table below shows the results of scores obtained by 10 students in two tests A and B out of 30 points each. Let x and y be the scores of tests A and B respectively, find the correlation coefficient r between x and y. Round to the nearest hundredth.'

'For example, consider renting an apartment or other rental property. Collect data on the distance x from the station and the rent y for several properties, and try drawing a regression line. Properties above that line can be considered expensive, while those below can be seen as more affordable.'

'Correlation coefficient'

'Correlation coefficient -0.83, strong negative correlation exists'

"Answer the 'page number' that meets the following condition."

'Please tell me about correlation coefficient.'