Two groups consisting of 400 and 500 person have mean height 68.5 inches and 66.1 inches and the variance 6.4 and 6.0 respectively. Examine whether the difference in mean is significant.
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yes it is significant
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0
Answer:
0.16
Explanation:
Mean: It is calculated by dividing the total number of values in a list of values, such as measurements or numbers, by the total number of values in the list. Add up each value in the set to determine the mean. Next, divide the total by the number of values. In other words, add all five numbers together, then divide the total by five.
Variance: Variability is measured by the variance. The average of the squared deviations from the mean is used to compute it. The degree of dispersion in your data collection is indicated by variance. The variance is greater with respect to the mean when the data are more dispersed.
Thus, the mean is significant
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