Question 10
The bar charts give company A's market share (%) in Vietnam's phone business during the first ten months of a year: 18, 20, 19, 21, 22, 19, 20, 18, 21, 22. Find the “standard deviation (standard error)” of these market shares, rounded to the nearest tenth.
The following source mathematical images preserve the printed option/formula/figure variants; text and choices above or below provide clean typesetting.
The following source mathematical images preserve the printed option/formula/figure variants; text and choices above or below provide clean typesetting.