See All PhotosGlassdoorPart of Recruit HoldingsGlassdoorAdd an InterviewAbout931Reviews92JobsMoreOverviewCompany OverviewOrganization StructureLocationsFAQ931Reviews41Polls92Jobs1.5KSalaries1.2KInterviews529Benefits187PhotosFollow+Add an InterviewInterview QuestionSenior Data Scientist Interview-GlassdoorHow would you test if survey responses were filled at random by certain individuals, as opposed to truthful selections?AnswerAdd TagsFlag as InappropriateFlag as InappropriateInterview Answers4 Answers▲7▼This is a very basic psychometrics question. Calculate Cronbach's alpha for the survey items. If it is low (below .5), it is very likely that the questions were answered at random.Brendan on Jan 30, 2016Flag as InappropriateFlag as Inappropriate▲5▼I would design the test in a way that certain information is asked two different ways. if two answers disagree with each other I would seriously doubt the validity of the answers.Anonymous on Feb 19, 2015Flag as InappropriateFlag as Inappropriate▲1▼We need to find the histograms of the questions in the survey to see the distribution of each answer in each question. All question histograms will likely follow the normal distribution if they are truthful selection. If one response with more than of half of total answers being located outside of 95% confidential interval in each histogram, the response will be categorized as random fall out of mean plus twAnonymous on Aug 18, 2019Flag as InappropriateFlag as Inappropriate▲0▼Similar to Cronbach’s alpha, calculate corrected item-total correlations. Since the item is part of the total, you will need to remove it from each estimate to correct for this. Otherwise, you will get inflated estimates. Drop items with very low item-total correlations (either 1.5. Good luck.Anonymous on Jan 8, 2020Flag as InappropriateFlag as InappropriateInterviews>GlassdoorAdd Answers or CommentsTo comment on this, Sign In or Sign Up. Glassdoor CareersSince Glassdoor was founded, we have believed in the power of transparency to create change. We were built on the belief that transparency... – MoreOur ValuesOur LeadersWork Where You WantDEI at Glassdoor This is the employer's chance to tell you why you should work for them. The information provided is from their perspective.