Answer:
B
Step-by-step explanation:
Put in order smallest to largest:
43, 46, 48, 50, 50, 51, 52, 55, 57, 57, 58
Identify the median (middle number). That's 51. So we can split this into a lower half and an upper half:
Lower half: 43, 46, 48, 50, 50
Upper half: 52, 55, 57, 57, 58
The lower quartile starts at the median of the lower half: 48.
The upper quartile ends at the median of the upper half: 57.
So the answer is B.
