In computing descriptive statistics from grouped data, a. data values are treated as if they occur at the midpoint of a class. b. the grouped data result is more accurate than the ungrouped result. c. the grouped data computations are used only when a population is being analyzed. d. none of these alternatives is correct.

Descriptive statistics are used to give a quantitative summary of the statistical measures of dataset. They include, the median, mean, range, mode and so on.

Grouped data refers data values which are arranged or grouped into intervals rather than a single value as related to ungrouped data.

The data value, x is obtained by taking the average of the lower and upper boundary value to give the mid value of x, also called the midpoint.

Therefore, data values are treated as if they occur at the midpoint.

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which of the following is not an effect of technology on farming?

the correct answer is: it makes farmers perform more tasks by hand for apex.