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The maximum daily temperatures in °C for Johannesburg for the first 10 days in July were recorded in the following table.

  1. Calculate the mean for this data (one decimal place)                                 (2)
  2. Use a calculator to calculate the standard deviation for this data (one decimal place).     (2)
  3. How many temperatures lie outside one standard deviation of the mean?        (2)
in Grade 12 Maths by Silver Status (25.1k points) | 16 views

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1. mean = 22.9 degrees celcius

2. standard dev= 3.5

3. 4 temperatures lie outside (22.9-3.5; 22.9+3.5)= (19.4;26.4)
by Diamond (80.1k points)

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