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# This distribution of data shows lots of lifetime averages in the middle classes but tails off sharply at both the upper and lower ends What best explains the fact that there are very few averages in?

Updated: 4/28/2022

Wiki User

11y ago

The histogram is symmetrical

Wiki User

11y ago

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Q: This distribution of data shows lots of lifetime averages in the middle classes but tails off sharply at both the upper and lower ends What best explains the fact that there are very few averages in?
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### Why do engineering classes in university have the highest class averages?

The averages of a class may depend on two criteria. If it is norm referenced criteria then there is a distribution according to a bell curve. If it is criterion referenced then it would have a distribution set to what the knowledge learned and compared to the objectives of the class. Secondly, the students who sign up for a class, especially criterion referenced, may be students well suited for the tasks required to make the grades.

### Is it likely that the final abundance distribution among the age classes will be similar?

Is it likely that the final abundance distribution among the age classes will be similar

### Is a histogram a graph that represents the cumulative frequencies for the classes in a frequency distribution?

No it is not. The ogive is a graph that represents the cumulative frequencies for the classes in a frequency distribution.

### Why do engineering and computer science classes in university have the highest class averages?

Because engineers are smart and they enjoy their subjects

### How do you calculate mode with two modal classes?

It is simply a distribution which has two modal classes: you cannot convert two of them into a mode.

### What is the modal class in a grouped data if there are two classes with the same highest frequency?

They are both modal classes - the distribution is bi-modal.

### What is 2k rule?

The 2k or 2 to K rule is used to determine the number of classes for a frequency distribution. The 2k rule should be used as a guide more than a dictator of determining the number of classes for a frequency distribution.

### Methods of irrigation?

There are three broad classes of irrigation systems: Pressurized distribution Gravity flow distribution Drainage flow distribution

### What is grouping of data into classes giving the number of observation in each class?

frequency distribution

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### Open ended class within the frequency distribution?

If, in a frequency distribution, the initial class interval is indeterminate at its beginning and/or the final class interval is indeterminate at its end, the distribution is said to possess "open ended" classes.

### Why are unequal class intervals used in frequency distribution?

to avoid a large number of empty classes?