Opal is collecting data on water levels in different parts of town. she notices that her sample data has a low-value outlier. which statement must be true?

removing the outlier will not change the spread of the graph of the data set.

removing the outlier will not change the variance
of the data set.

removing the outlier will increase the variance of the data set.

removing the outlier will decrease the spread of the graph of the data set.

option: D is correct. (Removing the outlier will decrease the spread of the graph of the data set.)

Step-by-step explanation:

Since we know that:

" An outlier is an observation that lies an abnormal distance from other values in a random sample from a population "

Opal is collecting data on water levels in different parts of town. She notices that her sample data has a low-value outlier.

      ( As variance is calculated by firstly subtracting mean from each entry and then squaring the new entries and then calculating their mean)

" Describing the data with reference to the spread is called variability "

Hence; Removing the outlier will decrease the spread of the graph of the data set.

Hence, option D is correct.

one that is bigger than 3 1/2

%40

step-by-step explanation: