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`Exhibit 2195
`Page 01 of 04
`
`

`

`1/25/22, 11:49 AM
`
`Survey Sample Size: How Much Do | Need? | FocusVision
`
`=/ FOcUSVISION
`A Forsta brand
`
`=
`~~
`
`Mostof the time, you'll be studying large populations (e.g. populations consisting of thousandsor millions of individuals).It
`is commonpractice in market research to use 200-300participants as a starting point for determining sample size for your
`study. With at least this manyparticipants, you'll have theability to make inferences about the wider populationof interest.
`
`Two hundred surveyparticipants are not always feasible, however. There may befinancial orlogistical hurdles standing in
`the way. In this case, 100 survey participants are sometimes accepted, but the lower number represents a compromisein
`the quality of your data.
`
`If you just need a rough or “ballpark” view of the underlying population being studied, even fewer participants are needed. In
`this case, 30 to 60 survey participants are sufficient for doing investigational work and developing — rather than validating
`— ahypothesis.
`
`Higher Precision
`
`At 200 survey participants, your data will be robust enough to base business decisions on. You'll have the opportunity to
`derive conclusions from your data at the 95% statistical confidencelevel.
`
`Whatif you need to be more precise than that? Well-knownpolitical polls that strive for a very high, academic-level
`precision use samples of about 1,000 individuals to get information about national attitudes and opinions.
`
`Customer segments
`
`Anytime your research goal involves detecting significant differences between customer segments, your total sample size
`mustbe set to accommodate the sample size requirements of each group. For example, if you want to understand gender
`differences, your sample should include at least 200 females and 200 males. That meansa total sample size of 400.
`
`Evaluate your needs
`
`These rules of thumbs on sample size should serve mostall your survey requirements. There are always uniquesituations,
`however, and sample sizes should also be evaluatedto fit your specific needs. Recruiting more people to your survey
`means more costs, and especially if your targetis difficult to reach, a minimum sample of 200 or even 100 survey
`participants may notbe feasible or financially possible. You might also have a situation where your populationis less than
`100 individuals. What then? Obviously, the 200 minimum rule couldn't apply. For more custom situations, sample size
`calculators are available, and these can help you evaluate the change in statistical precision for various population and
`sample sizes.
`
`Sharethis article: oe oO © o
`
`Wantto talk? Have a question? We'd love to hear from you. E-mail bloggers@focusvision.com
`
`https:/Awww.focusvision.com/blog/survey-sample-size-how-much-do-i-need/#:~:text=Rule of thumb for sample sizes&text=It is commonpractice in,the ...
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`2/4
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`Exhibit 2195
`
`Page 02 of 04
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`Exhibit 2195
`Page 02 of 04
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`

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`1/25/22, 11:49 AM
`
`Survey Sample Size: How Much Do| Need? | FocusVision
`
`=/ FOCUSVISION
`A Forsta brand
`
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`https:/Avww.focusvision.com/blog/survey-sample-size-how-much-do-i-need/#:~:text=Rule of thumb for sample sizes&text=It is commonpractice in,the ...
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`Exhibit 2195
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`Page 03 of 04
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`Exhibit 2195
`Page 03 of 04
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`

`

`1/25/22, 11:49 AM
`
`Survey Sample Size: How Much Do | Need?| FocusVision
`
`=/ FOCUSVISION
`A Forsta brand
`
`https:/Avww.focusvision.com/blog/survey-sample-size-how-much-do-i-need/#:~:text=Rule of thumb for sample sizes&text=It is commonpractice in,the ...
`
`4/4
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`Exhibit 2195
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`Page 04 of 04
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`Exhibit 2195
`Page 04 of 04
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