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Delia Auer
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∙ 12y agoIf it is a discrete variable, then 31 - 25 = 6
If it is continuous then 31.5 - 24.5 = 7
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What is class interval size?
The class interval for each interval is the difference between its upper limit and its lower limit.
How do you work out frequency density?
basically this is an exampleAGE (YEARS) FREQUENCY FREQUENCY DENSITYFD= Frequency DensityAge : 0
Effect on the width of the confidence interval when sample size is increased?
In general, the confidence interval (CI) is reduced as the sample size is increased. See related link.
To increase the numeric size of this interval you would add a?
Accidentals DON'T alter the numeric size of intervals.
How do linear and exponential functions change over equal intervals?
The linear function changes by an amount which is directly proportional to the size of the interval. The exponential changes by an amount which is proportional to the area underneath the curve. In the latter case, the change is approximately equal to the size of the interval multiplied by the average value of the function over the interval.
What is class interval size?
The class interval for each interval is the difference between its upper limit and its lower limit.
What is the sum of the product of the frequencies and the square of the class marks (ΣfX²60,55,40,48,52,36,50?
Step 1: Find the midpoint of each interval. Step 2: Multiply the frequency of each interval by its mid-point. Step 3: Get the sum of all the frequencies (f) and the sum of all the fx. Divide 'sum of fx' by 'sum of f ' to get the mean. Determine the class boundaries by subtracting 0.5 from the lower class limit and by adding 0.5 to the upper class limit. Draw a tally mark next to each class for each value that is contained within that class. Count the tally marks to determine the frequency of each class. What is this? The class interval is the difference between the upper class limit and the lower class limit. For example, the size of the class interval for the first class is 30 – 21 = 9. Similarly, the size of the class interval for the second class is 40 – 31 = 9.
How to find acceleration?
Acceleration has two parts ... its size and its direction.To find the size (magnitude):-- pick a time interval-- measure the speed at the beginning of the interval-- measure the speed at the end of the interval-- subtract the speed at the beginning from the speed at the end-- divide that difference by the length of the time interval-- the result is the magnitude of acceleration during that time interval
The suggested interval size of the class intervals for a histogram can be estimated by?
highest value-lowest value/number of classes
Why the median changes by changing the size of class intervals in frequency ditribution?
Because median is the mid of the class intervals. Therefore, it is a positional measurement. Hence, if the size of class interval increases or decreases then the middle position will also increase or decrease and thus median.
What happens to the confidence interval if you increase the sample size?
The confidence interval becomes smaller.
How do you work out frequency density?
basically this is an exampleAGE (YEARS) FREQUENCY FREQUENCY DENSITYFD= Frequency DensityAge : 0
How do you determine the skip interval in systematic sampling?
Assuming that you know the population size, N, and that you are confident that the sample size, n, you have chosen is adequate, then the skip interval is ~n/N. For example, if the populaton size if 998 and you reckon that you need a sample size of 20 then the skip interval would be 50.
What happens to width of interval if you decrease the sample size?
It will decrease too. * * * * * If it is the confidence interval it will NOT decrease, but will increase.
What happens to the width of the confidence interval when you are unable to get a large sample size?
The width of the confidence interval increases.
Effect on the width of the confidence interval when sample size is increased?
In general, the confidence interval (CI) is reduced as the sample size is increased. See related link.
What is the class mark of class interval 10.5-17.5 and class size 7?
Class mark = (10.5 + 17.5)/2 = 14Class mark = (10.5 + 17.5)/2 = 14Class mark = (10.5 + 17.5)/2 = 14Class mark = (10.5 + 17.5)/2 = 14
