For quality control, a company that manufactures lightbulbs conducted five different trials. In each trial, 500 different lightbulbs were tested. The bar graph above shows the number of defective lightbulbs found in each trial. What is the mean number of defective lightbulbs for the five trials?
56 items match · Math · One-variable data: Distributions and measures of center and spread
The mean of the list of numbers above is what fraction of the sum of the five numbers?
Andrew and Maria each collected six rocks, and the masses of the rocks are shown in the table above. The mean of the masses of the rocks Maria collected is 0.1 kilogram greater than the mean of the masses of the rocks Andrew collected. What is the value of x ?
Over this 5-day period, which of the following is NOT equal to 81°F?
The table above shows the number of students from two different high schools who completed summer internships in each of five years. No student attended both schools. Which of the following statements are true about the number of students who completed summer internships for the 5 years shown?
- The mean number from Foothill High School is greater than the mean number from Valley High School.
- The median number from Foothill High School is greater than the median number from Valley High School.
The median of the scores for group B is how much greater than the median of the scores for group A?