Question: Some real-world experiments and surveys are not performed using a true random sample. Describe the impact this has on obtaining accurate results. Knowing the cost

Some "real-world" experiments and surveys are not performed using a true random sample. Describe the impact this has on obtaining accurate results. Knowing the cost and time it takes to obtain a true simple random sample (SRS), is there a better way to collect data? What if you had to survey a random sample of students on campus - how would you gather your sample data?

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