This is a supplied historical example from the book, not a current weather report.
The source names daily lows in Barrie, Ontario, for the week of February fourteenth, twenty twenty-one.
In Data, expand Quick Entry and keep the numeric list L one.
Enter negative twenty, negative twelve, negative fifteen, and negative twenty-three.
Then enter negative seventeen, negative thirteen, and negative nineteen. The unit is degrees Celsius.
Separate these seven observations with commas, as the native field requests.
Choose Add. The native L one column now contains the seven observations.
Open Descriptive statistics. Use one-variable statistics and L one with seven values.
Before calculating, find the average of these seven daily low temperatures.
They are negative twenty, negative twelve, negative fifteen, and negative twenty-three degrees Celsius.
And negative seventeen, negative thirteen, and negative nineteen degrees Celsius.
Add the seven values and divide by seven. Take eight seconds to think.
[Eight-second silent thinking pause; native Calculate Statistics has not been selected.]
Now choose Calculate Statistics. The native mean is negative seventeen degrees Celsius.
The seven values sum to negative one hundred nineteen. Dividing by seven gives negative seventeen.
The native source audit shows seven source rows, seven used, and zero omitted.
This averages the supplied daily lows. It does not measure an average full-day temperature.
Open Data, then choose Download workspace to save the observations and analysis setup.
No outside weather data or new observations were added.