Answer:
0.5
Explanation:
Zscore = (x - mean) / standard deviation
Given the data:
X : 462 490 350 294 574
The second observation = 490
The mean and standard deviation of the data could be obtained using a calculator :
Mean = 434
standard deviation = 112
ZSCORE = (490 - 434) / 112
ZSCORE = 56 / 112
ZSCORE = 0.5
