Investors appear to be confused about what's ahead for U.S. bonds, gold, crude oil and the dollar as a result of the Federal Reserve's expected move to increase interest rates in December.

With that in mind, here are this week's key charts and analysis and ideas on how to trade these four important markets using exchange-traded funds.

Last week, the yield on the U.S. Treasury 30-year bond stayed below its 200-week simple moving average of 3.14% and below its 2015 high of 3.25% set on June 26 high yield of 3.25%.

Comex gold futures traded to a multiyear low of $1,062.0 on Nov. 18, a level not seen since February 2010. This was the low from which the gold bubble began to inflate to its all-time high of $1,923.7 set in September 2011.

Nymex crude oil declined to as low as $39.91 on Nov. 18, but remains above its August 24 low of $37.75. The lower low is the post-bubble low of $33.20 set in January 2009. The oil bubble peaked at $147.27 in July 2008.

The euro versus the dollar traded as low as 1.0615 on Nov. 18, but above its 2015 low of 1.0456 set on March 16. The last time the euro was this low was in January 2003. The twenty-year low for the euro was well below parity at 0.8323 in October 2000. The euro was below parity between January 2000 and December 2002.

The euro bottomed after the Nasdaq bubble popped, then both the euro and stock market were in bull markets simultaneously, until both succumbed to the crash of 2008. The correlation then flipped as the euro struggled  as stocks traded to all-time highs. This relationship is a warning that the equity averages near highs have risen into bubble territory!

Here's the daily chart for the bond ETF.


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The 20+ Year Treasury Bond ETF (TLT) - Get Report , which is a basket of U.S. Treasury bonds with maturities of 20 to 30 years, had a close of $120.45 on Friday, down 2.5% so far in the fourth quarter and down 4.3% year to date.

The daily chart shows the Fibonacci retracements of the decline from $138.50 set on Jan. 30 to the low of $114.88 set on June 26. The bond then rallied from this low to the high of $128.92 set on Aug. 24. This rebound could not hold the 50% retracement of $126.69. Since then the bond ETF has traded back and forth from just below the 23.6% retracement of $120.43 to the 38.2% retracement of $123.89.

Investors looking to buy the bond ETF should place a good till canceled limit order to buy the ETF if it drops to $117.11 and $115.58, which are key levels on technical charts until the end of November and the end of the year, respectively.

Investors looking to reduce holdings should place a good until canceled limit order to sell the ETF if it rises to $121.60, which is a level on technical charts until the end of 2015.

Here's the weekly chart for the gold exchange-traded fund.


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The SPDR Gold Shares ETF (GLD) - Get Report , which is backed by gold bullion, closed at $103.09 on Friday, down 3.5% so far in the fourth quarter and down 9.2% year to date.

The weekly chart has been negative since Oct. 30 and remains so with the ETF below its key weekly moving average of $106.81 and well below its 200-week simple moving average of $133.27. The weekly momentum reading fell to 32.53 last week down from 46.33 on Nov. 1. The downtrend support comes in at $101.30 this week.

Investors using good till canceled limit orders to but weakness to $102.33 were filled on Nov. 17.

Investors looking to buy the gold ETF should place a good till canceled limit order to buy the ETF if it drops to $101.30, which is the down trend support.

Key levels of $104.46 and $105.02 remain in play until the end of November and the end of 2015, respectively. Investors trading for short-term gains can use these levels in GTC limit orders to sell.

Here's the weekly chart for the commodity index ETF.


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The iShares GSCI Commodity-Index Trust Fund (GSG) - Get Report , which is 70% to 75% weighed to energy and crude oil, had a close of $15.58 on Friday, down 8.8% so far in the fourth quarter and down 27.8% year to date.

The weekly chart shifted to negative on Oct. 30 and stays negative with the ETF below its key weekly moving average of $16.63 and well below its 200-week simple moving average of $29.08. The weekly momentum reading declined to 27.92 last week down from 35.77 on Nov. 13.

This ETF remains below key levels of $17.11 and $17.62 in play until the end of November and end of 2015, respectively.

Investors looking to reduce holdings should place a good until canceled limit order to sell the ETF if it rises to $24.02 and $25.38, which are key levels on technical charts until the end of 2015.

Here's the weekly chart for the dollar index ETF.


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The Deutsche Bank USD Index (UUP) - Get Report , which is basket of currencies including the euro, Japanese yen, British pound, Canadian dollar, Swedish krona and Swiss franc, closed at $25.94 Friday, up 3.3% so far in the fourth quarter and up 8.2% year to date.

The weekly chart has been positive since Oct. 23 and stays positive with the ETF above its key weekly moving average of $25.44, and well above its 200-week simple moving average of $22.84. The weekly momentum reading rose to 79.18 last week up from 71.21 on Nov. 13.

The key to the maintaining dollar strength continues to be staying above key levels of $25.33 and $25.53 which are key levels in play until the end of November and the end of 2015, respectively.

Investors looking to buy the dollar ETF should place a good till canceled limit order to buy the ETF if it drops to $24.03, which is a key level on technical charts until the end of 2015.

This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stocks mentioned.