approxiatmately how many observations are in the interval 55.5 to 76.0

Question

x bar=60.5 median=64.0 s=10.5 q1=55.5 q3=76.0 n=1000 observations

Answer 1

The definition of quartile implies that 50% of the observation data (500 observations) lies between quartiles 1 and 3 (the interquartile range) even though the mean is lower than the median (Q2). The lower mean implies a skew distribution with weight towards the lower 50%.