The following frequency distributiomn table represents the temperature (in °C) recorded on 37X days throughout a year. Temperature (°C) 15 - 18 18 - 21 21 - 24 24 - 27 27 - 30 30 - 33 33 - 36 36 - 39 Number of days 12 5X-1 30 10X+2 21 13 (X/2)+5 a. Compute the average temperature recorded during the period. Answer in exact fraction, or rounded to at least 4 decimal places °C b. Compute the median temperature recorded during the period. Answer in exact fraction, or rounded to at least 4 decimal places. °C c. Determine the variance in the temperature. Answer in exact fraction, or rounded to at least 4 decimal places.

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