--%>

Creating Grouped Frequency Distribution

Creating Grouped Frequency Distribution: A) At first we have to determine the biggest and smallest values. B) Then we have to Calculate the Range = Maximum - Minimum C) Choose the number of classes wished for. This is generally between 5 to 20. D) Find out the class width by dividing the range by the number of classes and then rounding up. We have to keep in mind that we must round up, not off. Generally 4.2 would round to be 4, however in rounding up, it becomes 5. When the range divided by the number of classes gives an integer value (without any remainder), then you can either add up one to the number of classes or add up one to the class width. Sometimes you are locked to a certain number of classes as of instructions. The Bluman text fails to state the case when there is no remainder. E) Choose an appropriate starting point less than or equivalent to the minimum value. "The class width times, the number of classes" values ware most capable to cover. We require covering one more value than the range. We can finely follow the rule: The beginning point plus the number of class’s times the class width should be bigger than the maximum value. Here the lower limit is the starting point of the first class. We can get the rest of lower limits by continuously adding the class width to this lower limit. F) To getting the upper limit of first class, we can subtract one from the lower limit of second class. Then carry on adding the class width to this upper limit to determine the rest of the upper limits. G) Find out the boundaries by subtracting 0.5 units from lower limits and adding up to 0.5 units from upper limits. The boundaries are as well half-way among the upper limit of one class and the lower limit of subsequent class. It is not essential to find the boundaries whether you are trying to achieve it. H) Now tally the data. I) Find out the frequencies. J) Now determine the cumulative frequencies. Based on what you are trying to achieve, it might not be essential to determine the cumulative frequencies. K) Whenever essential, find out the relative frequencies and or relative cumulative frequencies. To find the frequencies, it is possible to have TI-82 calculator for you. Initially we will have to determine the class width and class boundaries.

   Related Questions in Basic Statistics

  • Q : Hw An experiment is conducted in which

    An experiment is conducted in which 60 participants each fill out a personality test, but not according to the way they see themselves. Instead, 20 are randomly assigned to fill it out according to the way they think a parent sees them (i.e. how a parent would fill it out to describe the participant

  • Q : Decision Variables Determine Decision

    Determine Decision Variables: Let X1 be the number of private homes to be inspectedLet X2 be the number of office buildings to be inspect

  • Q : Computing Average revenue using

    Can anyone help me in the illustrated problem? The airport branch of a car rental company maintains a fleet of 50 SUVs. The inter-arrival time between the requests for an SUV is 2.4 hrs, on an average, with a standard deviation of 2.4 hrs. There is no indication of a

  • Q : Probability how can i calculate

    how can i calculate cumulative probabilities of survival

  • Q : Correlation analysis and the regression

    1).  When you take out a mortgage, there are many different kinds of costs.  Usually the two largest are the interest rate (annual percentage that determines the size of your monthly payment) and the loan fee (a one-time percentage charged to you at the time

  • Q : Compare the test results The grade

    The grade point averages of 61 students who completed a college course in financial accounting have a standard deviation of .790. The grade point averages of 17 students who dropped out of the same course have a standard deviation of .940. Do the data indicate a

  • Q : Sample Questions in Graphical Solution

    Solved problems in Graphical Solution Procedure, sample assignments and homework Questions: Minimize Z = 10x1 + 4x2 Subject to

  • Q : STATISTICS Question This week you will

    This week you will analyze if women drink more sodas than men.  For the purposes of this Question, assume that in the past there has been no difference.  However, you have seen lots of women drinking sodas the past few months.  You will perform a hypothesis test to determine if women now drink more

  • Q : What is Inter-arrival times

    Inter-arrival times:A) Requests arrive randomly, often separated by small time intervals with few long separations among themB) The time until the next arrival is independent of when the last arrival occurredC) Coro

  • Q : Probability how can i calculate

    how can i calculate cumulative probabilities of survival