For a set of data,the mean is 50 and the standard deviation is 10.In the raw data,one of the observations is equal to 74.After the data are standardized,what will be the standardized value of this observation?
A) +7.4
B) -7.4
C) +2.4
D) -2.4

Question

Quizplus · Accepted Answer

To standardize the data, we use the formula: 
z = (x - μ) / σ
where z is the standardized value, x is the observation, μ is the mean, and σ is the standard deviation.

Plugging in the values, we get: 
z = (74 - 50) / 10
z = 2.4

Therefore, the standardized value of the observation 74 is +2.4.

For a Set of Data,the Mean Is 50 and the Standard