What is the meaning of frequency and examples?
Frequency describes the number of waves that pass a fixed place in a given amount of time. So if the time it takes for a wave to pass is is 1/2 second, the frequency is 2 per second. For example, an “A” note on a violin string vibrates at about 440 Hz (440 vibrations per second).
What are the characteristics of frequency?
There are four important characteristics of frequency distribution….CHARACTERISTICS OF FREQUENCY DISTRIBUTION
- Measures of central tendency and location (mean, median, mode)
- Measures of dispersion (range, variance, standard deviation)
- The extent of symmetry/asymmetry (skewness)
- The flatness or peakedness (kurtosis).
What is the difference between frequency table and frequency distribution?
The frequency table is a tabular form in which each piece of data is assigned to its corresponding frequency while a frequency distribution is the graphical representation of a frequency table.
Do all objects have a frequency?
All objects have a natural frequency or set of frequencies at which they vibrate. Still other objects will vibrate at a set of multiple frequencies that have no simple mathematical relationship between them.
What is a frequency table with intervals?
A frequency table organizes the data in three columns by displaying the intervals, a tally of the number of values within the interval, and a numerical value of the tally. A tally is a mark made to keep count of the number of values within the interval.
How do you find the mode in a frequency table?
How To Obtain The Mean, Median And Mode From A Frequency Table? To find the mean: Multiply midpoints by frequencies, add the subtotals and divide by the total of the frequencies. To find the mode: Look for the largest frequency and the corresponding value is the modal value or modal class.
How do you make a continuous frequency table?
Steps used to construct Frequency distribution continuous
- Find the maximum and minimum value from the given data.
- Decide the number of classes to be formed.
- Find the difference between the maximum and minimum value and divide this difference by the number of classes to be formed to determine the class interval.
How do you form a continuous class interval?
Answer Expert Verified In order to make class intervals continuous, you are supposed to subtract 0.5 from the lower limit and add 0.5 in the upper limit.
Is age discrete or continuous?
We could be infinitly accurate and use an infinite number of decimal places, therefore making age continuous. However, in everyday appliances, all values under 6 years and above 5 years are called 5 years old. So we use age usually as a discrete variable.
How do you convert a frequency distribution to a continuous grouped frequency table?
- Consider the classes 150 – 153 and 154 – 157.
- The lower limit of 154 – 157 = 154.
- The upper limit of 150 – 153 = 153.
- The difference = 154 – 153 = 1.
- Half the difference = 1/2 = 0.5.
- So, the new class interval formed from 150 – 153 is (150 – 0.5) – (153 + 0.5), i.e., 149.5 – 153.5.