Convert 3 and 19/20 to a decimal
1 answer:
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Answer:
Option D) The number of standard deviations a measurement is from the mean
Step-by-step explanation:
Standard Score:
- Standard score is also known as the z-score, z-value, normal scores or the standardized score.
- It tells us about the values of standard deviations by which the value of data point is above or below the mean value.
- The standard score for a data point may be negative or positive.
- It is obtained by subtracting the population mean from the data point and then dividing it by the population standard deviation.
- It is known as standardization or normalization.
Thus, standard score can be defined as:
Option D) The number of standard deviations a measurement is from the mean
Answer: b. 14 pounds
Step-by-step explanation:
Formula to calculate average :
Let x denotes the number of pounds the last person have to gain so that the group can attain its goal.
Required average = 10 pounds
Observations = 9, 13, 11, 6, 7 and x (pounds)
Number of observations= 6
Sum of all observations = 9+13+ 11+ 6+7+x=46+x
According to the question , we have
i..e the last person has to gain 14 pounds so that the group can attain its goal.
Hence, the correct answer is b. 14 pounds .