Calculate the Standard Deviation (s) for the following dataset: 2 3 3 2 3
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Calculate the Standard Deviation (s) for the following dataset:
2
3
3
2
3
Here n=5
ΣX=13
ΣX2 =35
x̅=ΣX/n
=13/5
x̅=2.6
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- Imagine as researchers we are interested in how many times in a typical week people turn off/snooze their alarm. Refer to the following set of responses as your data: 7 7 8 How are the scores distributed? (Circle one) esmaksm 8 8 8 8 9 9 9 10 10 10 11 11 12 12 13 13 17 Neatly draw a frequency distribution graph for these data. Clearly label your axes. Median = Mean = Normal + Skew - Skew Uniform levotot sy akstuales Bimodal Report the following measures of central tendency. Show your work below for the mean calculation: Mode = MultimodalCalculate the range, population variance, and population standard deviation for the following data set. If necessary, round to one more decimal place than the largest number of decimal places given in the data. 16,20,13,5,13,11,7,15,6,11Identify the range, variance and standard deviation. show complete solutions
- For this grouped data set: Scores | Frequencies 30-34 | 7 25-29 | 9 20-24 | 14 15-19 | 10 10-14 | 8 5-9 | 2 What is the Average Deviation, Standard Deviation and the Quartile Deviation of this data set?Find the range, sample standard deviation and inter-quartile range (1QR) of the following data set. 21 27 28 29 35 39 64 85 96 96 range = (Please enter an exact answer.) standard deviation (s) = (Round to one decimal place.) IQR = (Please enter an exact answer.) A new number, 156, is added to the data set above. Find the range, sample standard deviation and IQR of the new data set. range = (Please enter an exact answer.) standard deviation = (Round to one decimal place.) IQR = (Please enter an exact answer.) Which measure of spread is less affected by the addition of the extreme observation? O IQR Range O standard deviationFind the standard deviation using 2 methods. And identify it is a grouped data or ungrouped data
- Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to one more decimal place than the largest number of decimal places given in the data. 13,6,16,17,15,12,11,11,12,18Researchers looked at the average number of hours of sleep per day in a group of 8 college professors. Calculate the range, standard deviaion, and variance, for the dataset below. X = {6, 6, 5, 7, 5, 4, 8, 5} a. range = 4 standard deviation (sample) = 1.28 variance (sample) = 1.64 b. range = 5 standard deviation (sample) = 5 variance (sample) = 5.5 c. range = 4 standard deviation (sample) = 1.28 variance (sample) = 1.28 d. range = 4 standard deviation (sample) = 1.64 variance (sample) = 1.28Calculate the range, variance, and standard deviation of the following datasets and state which set is more uniform and consistent. a. Dataset A ={20,10,80,50}={20,10,80,50} Range: Variance: Standard Deviation: Round to two decimal places if applicable b. Dataset B ={39,47,58,28}={39,47,58,28} Range: Variance: Standard Deviation: Round to two decimal places if applicable c. Which dataset is more uniform and consistent?
- Find the range, sample standard deviation and inter-quartile range (1QR) of the following data set. 31 31 39 61 66 78 82 89 90 93 range = (Please enter an exact answer.) standard deviation (s) = (Round to one decimal place.) IQR = (Please enter an exact answer.) A new number, 264, is added to the data set above. Find the range, sample standard deviation and IQR of the new data set. range = (Please enter an exact answer.) standard deviation = |(Round to one decimal place.) IQR = (Please enter an exact answer.) Which measure of spread is less affected by the addition of the extreme observation? Range standard deviation O IQRIdentify the symbols used for each of the following: (a) sample standard deviation; (b) population standard deviation; (c) sample variance; (d) population variance. a. The symbol for sample standard deviation is b. The symbol for population standard deviation is c. The symbol for sample variance is d. The symbol for population variance isCalculate SS, variance, and standard deviation for the following sample of n = 9 scores. 4, 16, 5, 15, 12, 9, 10, 10, 9 Note: The computational formula works best with these scores. SS: Variance: Standard deviation:
