GMAT Comparison / Analogy practice questions
Comparison / Analogy is a high-yield GMAT topic. Work through these practice questions to build accuracy and speed before test day.
Free Comparison / Analogy practice
5 sample questions
A farm manager argues that switching from traditional sprinklers to drip irrigation will reduce water costs. The justification is that studies show drip irrigation uses 30% less water on average than sprinkler systems, which would significantly lower expenses given current water prices.
Which of the following, if true, most seriously undermines the argument's justification for switching to drip irrigation?
Many neighboring farms have seen increased crop yields after switching to drip irrigation.
Some crops grown in the region are not compatible with any form of irrigation.
The initial cost of drip irrigation equipment has decreased by 15% over the past two years.
The average water savings from drip irrigation are calculated based on ideal soil conditions that do not apply to this farm.
Drip irrigation systems require more frequent maintenance than traditional sprinkler systems.
A company launched a television advertisement for its new product, reaching an estimated 5 million viewers. However, the product's sales did not increase in the following month. The company concluded that television advertising was ineffective for this product.
Which of the following identifies the flaw in the argument above?
It confuses the total number of viewers with the number of viewers who actually purchased the product.
It ignores the possibility that customers might have discovered the product through other advertising channels.
It presumes that increased visibility always leads to increased sales without providing evidence.
It assumes that television advertising is equally effective for all demographic groups.
It fails to consider that the product's sales might have increased even without any advertising.
After implementing a new enterprise software system, a company found that employee satisfaction with workplace technology was initially low but improved significantly six months later. The company concluded that employees simply needed time to adapt to the new system.
Which of the following, if true, most seriously calls into question the company's explanation for the survey results?
A separate study found that satisfaction with workplace technology is strongly correlated with overall job satisfaction.
The company's competitors have achieved higher productivity gains with similar systems by providing more comprehensive training.
Employees who were initially resistant to the new system reported higher satisfaction after receiving additional technical support.
Many employees who report satisfaction with the new system still experience frequent technical issues that disrupt their workflow.
The survey was conducted immediately after a major software update that fixed several known issues with the system.
A recent study found that companies adopting a new technology did not outperform those that did not adopt it. This surprising result was explained by the technology being less effective than anticipated in improving efficiency.
Which of the following, if true, most seriously undermines the explanation provided for the surprising result?
The new technology requires specialized training that many companies are unwilling to invest in.
Companies that adopted the new technology were already more profitable than those that did not.
The study's data collection period coincided with an economic recession that disproportionately affected early adopters.
Many companies that adopted the new technology also implemented concurrent management restructuring.
Some companies that did not adopt the new technology still achieved significant improvements in efficiency through other means.
After implementing a five-year public awareness campaign about recycling, the city council noted that survey data showed a 30% increase in residents who reported recycling regularly. The council concluded that the campaign was effective at increasing participation in the recycling program.
Which of the following, if true, casts the most serious doubt on the city council's conclusion?
The survey measured recycling frequency by self-reporting rather than actual waste collection data.
Several other cities achieved similar participation increases without running public awareness campaigns.
Town hall meeting attendees, who were overrepresented in the survey, were more likely to have received campaign materials directly.
The city's waste processing facility began accepting three additional types of recyclables during the campaign period.
The recycling bins were distributed unevenly across neighborhoods, with wealthier areas receiving twice as many bins per capita.
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