Compute the 2020 standard deduction for the following taxpayers.

1. Ellie is 15 and claimed as a dependent by her parents. She has $1,200 in dividends income and $3,880 in wages from a part-time job.

2. Ruby and Woody are married and file a joint tax return. Ruby is age 66, and Woody is 69. Their taxable retirement income is $11,520.

3. Shonda is age 68 and single. She is claimed by her daughter as a dependent. Her earned income is $300, and her interest income is $650.

4. Frazier, age 38, is married but is filing a separate return. His wife itemizes her deductions.