/**
 * ## Description
 * The standard deviation breaks classes based on distance from the mean in standard deviation units.
 * The standard deviation breaks include: < -2 std dev, [-2, -1) std dev, [-1, 0) std dev, [0, 1] std dev, (1, 2] std dev, > 2 std dev
 *
 * ## Characteristics
 * - Centers on the mean value
 * - Classes represent standard deviation intervals
 * - Most appropriate for normally distributed data
 * - Helps identify areas that deviate significantly from the mean
 *
 * @example
 * ```ts
 * import { standardDeviationBreaks } from '@geoda/core';
 *
 * const data = [1, 2, 3, 4, 5, 6, 7, 8, 9];
 * const breaks = await standardDeviationBreaks(data);
 *
 * // breaks = [-0.47722557505166, 2.26138721247417, 5, 7.73861278752583, 10.47722557505166]
 * ```
 *
 * @param data The numeric values to be classified.
 * @returns The breaks values.
 */
export declare function standardDeviationBreaks(data: number[] | Float32Array): Promise<number[]>;