Understanding third perception about Internet privacy risks

The current study used a sample of the U.S Mturk respondents in November 2016. Mturk self-selected respondents to participate the survey. A respondent who completed the questionnaire received $3. Such compensation is common in survey research as a means to enhance response rates (Largent, Grady, Miller, & Wertheimer, 2012). The sample size of the current study was 613. According to prior statistical research, if continuous variables play primary roles in data analysis and the alpha level is set a priori at .05, level of acceptable error at 3%, and standard deviation of scale is 1.167 (7/6), the minimum recommended sample size is 118 using Cochran’s sample size formula (Kotrlik & Higgins, 2001). Survey scientists often increase the minimum sample size by 40% to 50% as compensation for the incomplete submissions (Fink, 1995; Salkind, 1997). In the current study, the size sample of 613 should provide satisfactory statistical power.

本研究选取了2016年11月美国MTurk参与者样本。参与者系通过MTurk平台自主选择加入调查。完成问卷的参与者可获得3美元的报酬，此类补偿在调查研究中颇为常见，旨在提升响应率（Largent, Grady, Miller, & Wertheimer, 2012）。本研究的样本量为613。根据先前的统计分析研究，若连续变量在数据分析中扮演主导角色，且预设的α水平为0.05，可接受的误差水平为3%，量表的标准差为1.167（7/6），则根据Cochran样本量公式（Kotrlik & Higgins, 2001）推荐的最低样本量为118。调查科学家通常将最低样本量增加40%至50%，以补偿未完成的提交（Fink, 1995; Salkind, 1997）。在本研究中，613人的样本量应当能够提供充分的统计效力。