KQ12: Why are cars so expensive?

Cars are one of the things that got more expensive during the last few years--and stayed that way. Why did car prices rise so much? Take the quiz and find out. Eleven questions. Go!

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Car price info comes from Cox Automotive, parent of Kelley Blue Book, one of the go-to-sources for automotive data.

Price-change data comes from the Bureau of Labor Statistics, which anybody can use (unless Trump shuts it down).

I've analyzed the components of car inflation in several Yahoo Finance stories, including this recent one. I grudgingly admit I'm biased against expensive cars. My Yahoo Finance pal Pras Subramanian might have a different perspective. We argue all the time about the virtues of fancy stitching and knurled shifter knobs.

KQ11: Do we really need the Federal Reserve?

President Trump thinks he can manage the economy better than the Federal Reserve and its chair, Jerome Powell. Can he? How effective is the Fed, anyway? What does it even do? Take the quiz to find out. Eleven questions. Go!

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Here’s some history on the Federal Reserve.

Here’s a list of recessions and depressions since 1854. The Fed has a nice summary of the Gilded Age panics from 1863 to 1913. You can google the panics of 1819, 1837 and 1857 separately. It's a million times better to be a bank customer today.

This chart shows that inflation falls when the Fed raises rates. You can play with the data yourself.

My Yahoo Finance colleagues and I have extensively covered Trump's effort to fire the Fed chair, force rates lower and co-opt the central bank.

KQ8: Are homes too expensive?

Home buyers are frustrated with high costs and some are simply locked out of the market. How bad is it? Take the quiz to find out. Nine questions. Go!

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I used National Association of Realtors data for affordability.

Harvard's Joint Center for Housing Studies also has a trove of data.

As always, the St. Louis Fed's FRED database is invaluable.