Question

question 1/1
which statistical tool shows data bell - shaped curve and shows the 68 - 95 - 99.7
a. control chart
b. normal distribution
c. histogram
d. scatter plot

Explanation:

The question is about identifying the statistical tool that shows a bell - shaped curve and the 68 - 95 - 99.7 rule. A normal distribution (also known as a Gaussian distribution) is characterized by a bell - shaped curve, and the 68 - 95 - 99.7 rule (empirical rule) applies to normal distributions, stating that about 68% of data lies within 1 standard deviation, 95% within 2, and 99.7% within 3 of the mean. A control chart is used for process control, a histogram is for showing the frequency distribution of data, and a scatter plot is for showing the relationship between two variables.

Answer:

B. Normal distribution