Answer:
mode
Step-by-step explanation:
the mode is 60-69
it has the most frequency
Answer:
(c) number of data points
(d) mode interval
Step-by-step explanation:
You want to know which descriptive statistics can be determined from the given histogram.
MedianThe median is the middle data value. Here, the numbers of data points in each interval are 6, 9, 8, 6, 4, for a total of 33 data points. The middle one is point 17, which is found in the interval 70–79. We cannot determine the median value any closer than that.
The median cannot be determined from the histogram.
ModeThe mode is the value that occurs most often. Since data is grouped, we have no idea what value may occur most often. We can say the interval with the most data points is 60–69, which means we can determine the mode interval, but not the mode.
The mode cannot be determined from the histogram.
Number of data pointsAs we have noted above, the number of data points is 33.
The number of data points can be determined from the histogram, choice C.
Mode intervalAs we have noted above, the interval with the most data points is 60–69. The mode interval can be determined from the histogram, choice D.
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A chemist wants to dilute a 30% phosphoric acid solution to a 15% solution. He needs 10 liters of the 15% solution. How many liters of the 30% solution and water must the chemist use?
The chemist needs to use 5 liters of the 30% solution and 5 liters of water.
Answer:
30% solution x liters
30%(water) 10-x liters
15% 10 liters
Step-by-step explanation:
Please help! -screenshot-