Nesta is making a scatterplot of the digit spans (how many numbers you can remember and repeat back) for his psychology class, with the spans for digits the students hear on one axis and the span for digits the students read on the other. The association is strong, but he notices that one student has a visual digit span that is twice as long as anyone else. What statistical validity question is he raising?

Is the correlation statistically significant?

Is there a restriction of range?

Is the relationship curvilinear?

Could outliers be affecting the relationship?

Suppose an economist believes that the price level in the economy is directly related to the money supply, or the amount of money circulating in the economy. the economist proposes the following relationship: p=a x m - p=price level - m=money supply - a=a composite of other factors, including real gdp, that change very slowly over time. how might an economist gather empirical data to test the proposed relationship between money and the price level? an economist would persuade the federal reserve to change the money supply to various levels, and observe the resulting changes in the price level. unlike researchers in the hard sciences, economists cannot study complex relationships using data. economists do not usually develop theoretical models of the economy but only analyze summary statistics about the current state of the economy. an economist would look for data on past changes in the money supply, and note the resulting changes in the price level

Amap from a trade development commission or chamber of commerce can be more useful than google maps for identifying

United continental holdings, inc., (ual), operates passenger service throughout the world. the following data (in millions) were adapted from a recent financial statement of united. sales (revenue) $38,901 average property, plant, and equipment 17,219 average intangible assets 8,883 1. compute the asset turnover. round your answer to two decimal places.