To find the mean temperature of the past week, you would add up all the temperatures and then divide by the number of days.
Mean temperature = (45 + 52 + 44 + 62 + 55 + 49 + 50) / 7 = 357 / 7 = 51 degrees
To find the median temperature of the past week, you would list the temperatures in order from smallest to largest and then find the middle value (or average of the two middle values if there is an even number of values).
Arranging the temperatures in ascending order: 44, 45, 49, 50, 52, 55, 62
Since there are 7 temperatures, the median would be the 4th value, which is 50 degrees.
During the week, when the main temperature was 0 degrees, the mean temperature would be:
(45 + 52 + 44 + 62 + 55 + 0 + 50) / 7 = 308 / 7 = 44 degrees
When the median temperature was blank degrees, we need to consider if there was any change in the temperatures. Since the median did not change, the blank would still be 50 degrees.