A search on Best Barryo Mobile's website for smartwatch produced ninety-two results, 40 of which are...

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A search on Best Barryo Mobile's website for "smartwatch" produced ninety-two results, 40 of which are actual smartwatches. Their prices are summarized in the frequency table below: Price ($) Number of Watches 50 to under 100 5 100 to under 150 6 150 to under 200 9 200 to under 250 6 250 to under 300 8 300 to under 350 6 a. Calculate an approximate value for the sample variance. A search on Best Barryo Mobile's website for "smartwatch" produced ninety-two results, 40 of which are actual smartwatches. Their prices are summarized in the frequency table below: Price ($) Number of Watches 50 to under 100 5 100 to under 150 6 150 to under 200 9 200 to under 250 6 250 to under 300 8 300 to under 350 6 a. Calculate an approximate value for the sample variance.