There is hereby established, within and as a part of the department of revenue, a bureau of research and revenue analysis, the head of which shall be the manager of revenue analysis. Under the supervision of the secretary of revenue, the manager of revenue analysis shall administer the bureau of research and revenue analysis. The secretary of revenue shall appoint the manager of revenue analysis, and the manager shall serve at the pleasure of the secretary of revenue. The manager of revenue analysis shall be in the unclassified service under the Kansas civil service act and shall receive an annual salary fixed by the secretary of revenue and approved by the governor. The manager of revenue analysis shall exercise the powers and perform the duties and functions assigned or delegated by the secretary of revenue or prescribed by law.