Analytical essays require thesis statements that let the reader know that you intend to analyze the components of your idea. An analytical thesis statement prepares the reader for an evaluation of the components of the topic. According to the Purdue Writing Lab (OWL), "A successful analytical thesis statement idea might address the issue of college entrance exams, such as analyzing and evaluating cultural biases as found in the writing component of the ACT college entrance exam." Such a thesis statement would involve explaining how the college admissions process is analyzed and what kinds of challenges admissions counselors encounter.
Expository theses explain topics to readers. Expository essays present information without evaluation or argument. An effective expository thesis idea might discuss college students who work full- or part-time and carry a full college course load.
Argumentative essays present a claim regarding the assigned thesis topic. The writer must provide evidence to support her claim(s). An argumentative claim might be posed as an opinion, interpretation or policy statement, among other forms, according to OWL. Argumentative papers attempt to convince the reader that the claims are valid. An example of a thesis idea for an argumentative paper might focus on claims that corporate campaign contributions should not be protected by the First Amendment.