Researchers want to know which food chain makes people the happiest. Researchers randomly assign participants to eat at either Chipotle, Qdoba, or California Tortilla for lunch every day for one week. At the end of the week, researchers measured the participants' happiness levels. Chipotle Qdoba California Tortilla 86 68 80 89 62 72 97 87 78 79 67 68 81 76 89 What is the mean squares between (S,)? Please compute to 4 decimal places.

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