Notes
using number of rows for frequency

Using the Number of Rows for Frequency

Example

ValueFrequency
57
611
712
89
Mean=7×5+11×6+12×7+9×84 \text{Mean} = \frac{7 \times 5 + 11 \times 6 + 12 \times 7 + 9 \times 8}{4}

Possible Causes

Possible Remedies

category: mistakes
category: statistics