A bar chart is titled: Number of Social Media Posts Yesterday. The ranges are on x-axis and numbers on the y-axis. The data are as follows: Range of 0 to 1 shows 4, range of 2 to 3 shows 3, range of 4 to 5 shows 1, and range of 6 to 7 shows 5. Levi makes this histogram to show the number of social media posts his friends made yesterday. How many observations are represented in Levi’s dataset?
___ observations.