The measurement units of the standard deviation are always: A) the same as those of the...
The measurement units of the standard deviation are always:
A) the same as those of the original data
B) the square of the measurement units of the original data
C) 50% of the measurement units of the original data
D) the square root of the sum of the squares of the original data set
Homework Answers
The measurement units of the standard deviation are always :
Answer :
A) The same as those of the original data.
For example if the data are height measurements in cm, the standard deviation will also be measured in cm.
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The measurement units of the standard deviation are always:
A) the same as those of the...
How do you find standard deviation once you know variance? a. take the square root of...
How do you find standard deviation once you know variance? a. take the square root of variance b. square variance c. they are the same d.Variance minus 1 equals standard deviation This is the equation for population variance ______ a. Sum of Squares divided by N SS/N b. Sum of Squares divided by N plus one SS/N+1 c. Sum of Squares divided by N minus one SS/N-1 d. It is the same for sample variance You would use this equation...
oose the correct interpretation of the standard deviation below. A. The standard deviation represents the sum...
oose the correct interpretation of the standard deviation below. A. The standard deviation represents the sum of the deviations from the mean. B. The standard deviation represents finding the deviation for each observation, squaring each deviation, and then adding them up. C. Since the standard deviation uses the square of the units of measurement for the original data, it is not easy to interpret. D. The standard deviation represents a typical distance of an observation from the mean. Suppose the...
In this problem, we explore the effect on the standard deviation of adding the same constant...
In this problem, we explore the effect on the standard deviation of adding the same constant to each data value in a data set. Consider the following data set. 13, 10, 5, 7, 13 (a) Use the defining formula, the computation formula, or a calculator to compute s. (Enter your answer to one decimal place.) ? (b) Add 8 to each data value to get the new data set 21, 18, 13, 15, 21. Compute s. (Enter your answer to...
In this problem, we explore the effect on the standard deviation of adding the same constant...
In this problem, we explore the effect on the standard deviation of adding the same constant to each data value in a data set. Consider the following data set. 9, 17, 10, 15, 6 (a) Use the defining formula, the computation formula, or a calculator to compute s. (Enter your answer to one decimal place.) (b) Add 2 to each data value to get the new data set 11, 19, 12, 17, 8. Compute s. (Enter your answer to one...
From the following list, single out those measurements for which the square root of a typical...
From the following list, single out those measurements for which the square root of a typical measurement is a proper estimate of the standard deviation of the distribution from which the measurement is drawn: (a) A 1-min count from a detector (b) A 5-min count from a detector ( c) The net counts from a detector over a 1-min period after background subtraction. (d) The counting rate expressed as counts per second based on a 100-s measurement (e) The average...
Which statement is INCORRECT? The value of the mean times the number of observations equals the sum of the observations. The standard deviation is expressed in terms of the original units of measurement but the variance is not. In a negatively
Which statement is INCORRECT?The value of the mean times the number of observations equals the sum of the observations.The standard deviation is expressed in terms of the original units of measurement but the variance is not.In a negatively skewed distribution, the mean is smaller than the median and the median is smaller than the mode.The interquartile range is found by taking the difference between the 1st and 3rd quartiles and dividing that value by 2.
- Which statistical test indicates the precision of the measured data set? A) mean B)Standard Deviation...
- Which statistical test indicates the precision of the measured data set? A) mean B)Standard Deviation C) Q-test D)Accuracy - Keeping or rejecting the 52 mg measurement (depending on the results of the Q-test), calculate the mean of the modified data set. (Report answer to 1 decimal place and with NO units.) - Calculate the estimated standard deviation of the modified data set. (Report to 1 decimal place and with NO units.)
51. The standard deviation of a probability distribution is: A. B. C. always positive the square ...
51. The standard deviation of a probability distribution is: A. B. C. always positive the square of the variance of the distribution. greater than the expected value of the probability distribution
51. The standard deviation of a probability distribution is: A. B. C. always positive the square of the variance of the distribution. greater than the expected value of the probability distribution
Age, Deviation, Squared Deviation, Frequency, Frequency x Squared Deviation EXERCISE #2 You fill in the 3rd...
Age, Deviation, Squared Deviation, Frequency, Frequency x
Squared Deviation
EXERCISE #2 You fill in the 3rd column of this table. The first entry is done for you. Commas are not necessary. Frequency Table for Data Set B Age (years) Frequency Age x Frequency 18 19 20 21 1782 105 45 31 12 28 10 15 16 1995 900 651 23 24 25 26 27 28 29 30 31 35 644 2 40 3 75 416 2 16 280 2 32...
Write a method called stdev that returns the standard deviation of an array of integers. Standard...
Write a method called stdev that returns the standard deviation of an array of integers. Standard deviation is computed by taking the square root of the sum of the squares of the differences between each element and the mean, divided by one less than the number of elements. (It's just that simple!) More concisely and mathematically, the standard deviation of an array a is written as follows: stdev(a)=∑i=0a.length−1(a[ i ]−average(a)2)a.length−1 For example, if the array passed contains the values [1,...
oose the correct interpretation of the standard deviation below. A. The standard deviation represents the sum of the deviations from the mean. B. The standard deviation represents finding the deviation for each observation, squaring each deviation, and then adding them up. C. Since the standard deviation uses the square of the units of measurement for the original data, it is not easy to interpret. D. The standard deviation represents a typical distance of an observation from the mean. Suppose the...
51. The standard deviation of a probability distribution is: A. B. C. always positive the square of the variance of the distribution. greater than the expected value of the probability distribution
51. The standard deviation of a probability distribution is: A. B. C. always positive the square of the variance of the distribution. greater than the expected value of the probability distribution
Age, Deviation, Squared Deviation, Frequency, Frequency x
Squared Deviation
EXERCISE #2 You fill in the 3rd column of this table. The first entry is done for you. Commas are not necessary. Frequency Table for Data Set B Age (years) Frequency Age x Frequency 18 19 20 21 1782 105 45 31 12 28 10 15 16 1995 900 651 23 24 25 26 27 28 29 30 31 35 644 2 40 3 75 416 2 16 280 2 32...
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