5272道题目5525 条题源记录 · 相同内容已合并
均值・中位数与集中趋势进阶
The table shows the frequencies of the data values for four data sets. Which data set has the greatest mean?
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均值・中位数与集中趋势挑战
A science class studied the feeding behavior of the birds that visited a bird feeder each school day for a period of time. The table summarizes the number of birds the class observed visiting the bird feeder each school day during this period of time. What is the median number of birds the class observed visiting the bird feeder each school day during this period of time?
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均值・中位数与集中趋势挑战
The histagram summarizes a data set of the weights, in pounds, of 14 salmon. If an additional weight of 21 pounds is added to the original data set to create a new data set of 15 weights, which of the following measures must be less for the new data set than for the original data set?
Ⅰ. The median
Ⅱ. The mean
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均值・中位数与集中趋势进阶
Each of the following frequency tables represents a data set. Which data set has the greatest mean?
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均值・中位数与集中趋势进阶
\( 5,\ 8,\ 11,\ 17,\ 29 \)
What is the mean of the data shown?
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均值・中位数与集中趋势挑战
Data set F consists of 55 integers, where the value of each integer is between 150 and 260. Data set G consists of the same 55 integers in data set F as well as the integer 10. Which of the following must be less for data set G than for data set F?
Ⅰ. The mean
Ⅱ. The median
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均值・中位数与集中趋势进阶
Data set A: 2, 2, 2, 5, 5, 8, 11, 11, 14, 14, 14
Data set B: 2, 5, 5, 8, 8, 8, 8, 8, 11, 11, 14
Data set A and data set B each have 11 values. Which of the following statements best compares the median of data set A and the median of data set B?
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均值・中位数与集中趋势挑战
A researcher created a data set by recording the daily low temperature, to the nearest integer, for each of the 31 days in December 2022 in a town in Illinois. The frequency table summarizes this data set.
Based on the frequency table, what could be the median of the recorded daily low temperatures, in degrees Fahrenheit?
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均值・中位数与集中趋势进阶
The table shows the amount of time it took a participant in a study to complete each of 5 tasks. What was the mean time, in minutes, for this participant to complete a task?
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均值・中位数与集中趋势挑战
12 , 12 , 18 , 24 , 29
What is the median of the data set shown?
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均值・中位数与集中趋势进阶
The weights of the four rock samples are 160 grams, 250 grams, 240 grams, and 330 grams, respectively. The weight of the fifth rock sample is x grams. If the average (arithmetic mean) weight of the first four rock samples is the same as the average weight of all five rock samples, what is the value of x ?
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均值・中位数与集中趋势挑战
Data set A and data set B each consist of 25 values. The given table shows the frequencies of the values for each data set. Which of the following statements best compares the means of the two data sets?
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