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Does cumulative frequency is the total of all class frequencies up to but not including the frequency of the present class?
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∙ 12y ago
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∙ 12y ago
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What is cumolative frequency curve?
A cumulative frequency curve is a graph that shows the cumulative frequency of a data set. This type of graph can present data, such as medians and quartiles. Another name for this curve is an Ogive.
How many types are there of frequency distribution?
Introduction:Frequency distribution is used to compress and summarize the whole data by grouping the data into classes and records the data points that fall in each class. The frequency distribution is considered as the base for descriptive statistics and they are also used to define the ordinal, nominal and the interval data. Frequency distribution is the comfortable way of grouping and organizing the data.Example of Frequency Distribution:Consider the frequency table for the students in a class where the data has been grouped according to the height of the students. Range of height Total number of student's cumulative frequency3.0 - 4.5 feet 15 154.5 - 5.0 feet 20 355.0 - 6.5 feet 25 506.5 - 7.0 feet 30 80In the case of nominal data the use of the contingency table is required. The frequency distributions are used to present the data graphically.Types of Frequency Distributions:There are three types of frequency distributions. Cumulative frequency distribution,Grouped frequency distribution,Cumulative Grouped frequency distribution.Cumulative frequency distribution (type 1):The cumulative frequency can be found from the frequency distribution by adding the cumulative frequency column. The highest cumulative frequency should be equal to the total number of frequenciesTemperature Frequency Cumulative frequency47 3 2246 3 1945 4 1544 3 1243 3 9Grouped frequency distribution (type 2):The grouped frequency distribution can be formed by grouping the values together into the class intervals. The range can be calculated using the maximum and the minimum values.Data set for temperature45 48 47 43 4442 45 43 46 4645 47 46 47 4543 47 45 47 4644 43 44 46 47The grouped frequency distribution is given byClass interval midpoint frequency45- 47 46 1542 - 44 43 7Cumulative grouped frequency distribution (type 3):In cumulative frequency distribution the cumulative frequency column is added to the grouped frequency distribution so that we can get the cumulative grouped frequency distribution.Class interval midpoint frequency Cumulative frequency45- 47 46 15 2242 - 44 43 7 7
How to present a variable that is not normally distributed?
There are many variables that are not normally distributed. You can describe them using a probability distribution function or its cumulative version; you can present them graphically.
Which one of the following discount frequencies will yield the largest present value give a stated future value and annual percentage rate.?
daily
How do you compare and contrast a stem-leaft plot and a frequency table?
To compare you find characteristics that are common to both. To contrast you list characteristics that are present in one but not in the other.
What is cumolative frequency curve?
A cumulative frequency curve is a graph that shows the cumulative frequency of a data set. This type of graph can present data, such as medians and quartiles. Another name for this curve is an Ogive.
How many types are there of frequency distribution?
Introduction:Frequency distribution is used to compress and summarize the whole data by grouping the data into classes and records the data points that fall in each class. The frequency distribution is considered as the base for descriptive statistics and they are also used to define the ordinal, nominal and the interval data. Frequency distribution is the comfortable way of grouping and organizing the data.Example of Frequency Distribution:Consider the frequency table for the students in a class where the data has been grouped according to the height of the students. Range of height Total number of student's cumulative frequency3.0 - 4.5 feet 15 154.5 - 5.0 feet 20 355.0 - 6.5 feet 25 506.5 - 7.0 feet 30 80In the case of nominal data the use of the contingency table is required. The frequency distributions are used to present the data graphically.Types of Frequency Distributions:There are three types of frequency distributions. Cumulative frequency distribution,Grouped frequency distribution,Cumulative Grouped frequency distribution.Cumulative frequency distribution (type 1):The cumulative frequency can be found from the frequency distribution by adding the cumulative frequency column. The highest cumulative frequency should be equal to the total number of frequenciesTemperature Frequency Cumulative frequency47 3 2246 3 1945 4 1544 3 1243 3 9Grouped frequency distribution (type 2):The grouped frequency distribution can be formed by grouping the values together into the class intervals. The range can be calculated using the maximum and the minimum values.Data set for temperature45 48 47 43 4442 45 43 46 4645 47 46 47 4543 47 45 47 4644 43 44 46 47The grouped frequency distribution is given byClass interval midpoint frequency45- 47 46 1542 - 44 43 7Cumulative grouped frequency distribution (type 3):In cumulative frequency distribution the cumulative frequency column is added to the grouped frequency distribution so that we can get the cumulative grouped frequency distribution.Class interval midpoint frequency Cumulative frequency45- 47 46 15 2242 - 44 43 7 7
Why IC741 is not used for high frequency applications?
IC741 has a low slew rate because of the predominance of capacitance present in the circuit at higher frequencies. As frequency increases the output gets distorted due to limited slew rate.
What is the Bluetooth standard?
The Bluetooth standard incorporates Adaptive Frequency Hopping (AFH). AFH allows signals to "hop" around using different frequencies within the Bluetooth range, thereby reducing the chance of interference when multiple Bluetooth devices are present. AFH also allows the device to learn frequencies that are already in use and to choose a different subset of frequencies hopping.
Are the visible frequencies of sunlight present at equal intensities?
No, some frequencies appear more intense than others
Why would you want to know what frequencies are present in a signal?
Jellybabies
How to present a variable that is not normally distributed?
There are many variables that are not normally distributed. You can describe them using a probability distribution function or its cumulative version; you can present them graphically.
What culture is cumulative?
The human culture is the one classified as cumulative. This means that the present human culture us as a result of many cultural changes through the generations.
What is the relation between science and musical instruments?
A simple answer is the mathematical relationship between the characteristics of the instrument and the sound. The sound scale is log linear, but there may be more than one harmonic frequency also present as is the case for the violin. I am not a musician, but I am quite interested in the mathematics of music, and the log plot of the piano key fundamental frequencies form a straight line plot. There may also be other frequencies present for a given tone that produce narrow side frequencies. These sound signals can be viewed in real time on an oscilloscope or a spectrum analyzer.
What phenomenon causes colors of visible light to be seperated by a prism?
Under a physical point of view, pure colors are different frequencies in the light. Generally a light beam is composed by a set of frequencies each of which with a different intensity. If a very concentrated pack of frequencies is clearly more powerful that color dominates and you see a colored light, otherwise you see a combination of colors that tends to white as far as the light spectrum (the set of present frequencies) is wide and all the frequencies have the same intensity. The refraction index of a material (glass for example) is a function of the frequency of the incoming light. Since the angle of refraction of a light beam by passing through the interface between different media depends on the two refraction indexes, beams of different frequencies are deflected at different angles by passing through the two interfaces air-glass and glass-air they encounter are deflected at different angles. If a light beam comprises a large number of frequencies, passing through the prism each frequency is deflected to its own angle. Thus the frequencies are divided and exits from the prism as different beams. The global effect is that a white beam (all the frequencies are present) exists from a prism as a sort of rainbow, where the colors (different frequencies) are directed in different direction and thus divided.
What is the difference between a pleasant sound and noise?
In case of pleasant sound ie musical sound there will be only harmoic frequencies. It may be in the ratio 1:2:3:......... or 1:3:5:....... But noise is not harmonic and any frequency will be present with different amplitudes.
What is the present tense of the word included?
I am including "n" (n represents whatever you are including) You are including "n" He/She/It is including "n" They are including "n" == "Including" is the present participle. "Include" is the present tense, "to include" is the present perfect tense. There is a difference, so be certain which form you need for your answer.
