Question Bank / Math / One-Variable Data
One-variable data: Distributions and measures of center and spread SAT question
Math · Problem-Solving and Data Analysis · Easy · Answer it here, explanation included.
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?
ExplanationShow
Choice B is correct. The numbers of defective lightbulbs found for the five trials are 4, 7, 1, 3, and 6, respectively. The mean is therefore 
.
Choice A is incorrect. This is the median number of defective lightbulbs for the five trials. Choice C is incorrect and may result from an arithmetic error. Choice D is incorrect and may result from mistaking the number of trials for the number of defective lightbulbs.
Drill this skill on Aceit
Adaptive practice, a daily plan, and score tracking take a free account so we can save your work.
More One-variable data: Distributions and measures of center and spread questions
- What is the median of the seven data values shown?
- From left to right the values of the vertical bars in the Group 1 box plot are as follows: First vertical bar: 21 Second vertical bar: 22 Third vertical bar: 25 Fourth vertical ba
- The table above shows the distribution of ages of the 20 students enrolled in a college class. Which of the following gives the correct order of the mean, median, and mode of the a
- 4 , 4 , 4 , 4 , 8 , 8 , 8 , 13 , 13 Which frequency table correctly represents the data listed?
- Data value Frequency 6 3 7 3 8 8 9 8 10 9 11 11 12 9 13 0 14 6 The frequency table summarizes the 57 data values in a data set. What is the maximum data value i
- Data set A and data set B each contain 5 numbers. If the mean of data set A is equal to the mean of data set B, what is the value of x ?