5272道题目5525 条题源记录 · 相同内容已合并
分布图表・极差与标准差进阶
The list gives the number of individuals in each of 6 groups of ring-tailed lemurs.
17, 4, 20, 17, 18, 6
What is the range of the numbers of individuals for the 6 groups of ring-tailed lemurs?
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分布图表・极差与标准差挑战
Each of the following frequency tables represents a data set. Which of these frequency tables represents the data set with the smallest standard deviation?
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分布图表・极差与标准差挑战
A data set of the orbital periods, rounded to the nearest whole number of Earth days, for 13 of Jupiter's moons is represented in the dot plot. An additional moon with an orbital period of 621 days is added to the original data set to create a new data set of 14 orbital periods. Which statement best compares the mean and median of the new data set to the mean and median of the original data set?
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分布图表・极差与标准差挑战
The bar graph shows the number of trees planted for 4 separate plots of land on a tree farm.
What is the maximum number of trees planted on one of these 4 plots of land?
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分布图表・极差与标准差进阶
The average (arithmetic mean) of a list of 1,000 numbers is 32 , and the standard deviation is d, where d > 0. Which of the following two numbers, when added to the list, will result in a list of 1,002 numbers with a standard deviation of less than d ?
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分布图表・极差与标准差进阶
The table shows the frequency of values in a data set.
What is the minimum value of the data set?
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分布图表・极差与标准差挑战
Data set A: 8, 11, 12, 15, 21, 27
Data set B: 9, 12, 13, 16, 22, h
Data sets A and B each consist of 6 values as shown, where h is a constant. If the standard deviation of data set A is greater than the standard deviation of data set B, which of the following could be the value of h?
I. 23
II. 28
III. 29
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分布图表・极差与标准差挑战
Data set A: 8, 11, 13 ,16, 21, 26
Data set B: 9, 12, 14, 17, 22, h
Data sets A and B each consist of 6 values as shown, where h is a constant. If the standard deviation of data set A is greater than the standard deviation of data set B, which of the following could be the value of h?
I.23
II. 27
III. 28
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分布图表・极差与标准差挑战
The maximum temperature on April 1. in degrees Fahrenheit (°F), was recorded each year at a certain weather station for 11 years. The histogram summarizes the recorded data set.
The temperature of 76.2 °F is removed from this data set to create a new data set of 10 temperatures. Which of the following statements must be true?
I.The mean of the new data set is less than the mean of the original data set.
II.The median of the new data set is less than the median of the original data set.
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分布图表・极差与标准差进阶
The dot plot shows the distribution of capacity for a set of capacitors, set A, which a researcher used for a certain experiment. For another experiment, the researcher used a different set of capacitors, set B. Set B has the same number of capacitors as set A but the capacity of each capacitor of set B is 14 microfarads (\( μ \)F) greater than the capacity of each respective capacitor in set A. Which of the following is true about the capacities of the capacitors in set B?
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分布图表・极差与标准差进阶
The histogram shows the distribution of 20 lengths, in feet, in a data set. The first bar represents the lengths that are less than 50 feet, the second bar represents the lengths that are at least 50 feet but less than 100 feet, and so on. Which of the following could be the maximum length, in feet, in this data set?
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分布图表・极差与标准差挑战
Which of the following lists represents a data set with the smallest standard deviation?
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