Answer :
To find the mean of the given set of data, follow these steps:
1. Add up all the numbers in the data set.
- Data set: 78, 79, 80, 80, 89, 89, 92, 93, 94, 95, 95, 95
- Sum = 78 + 79 + 80 + 80 + 89 + 89 + 92 + 93 + 94 + 95 + 95 + 95 = 1059
2. Count the number of data points.
- There are 12 numbers in the data set.
3. Calculate the mean.
- Mean = Total sum of the data / Number of data points
- Mean = 1059 / 12 = 88.25
4. Round the mean to the nearest tenth.
- When rounded to the nearest tenth, 88.25 becomes 88.3.
Therefore, the mean of the data set, rounded to the nearest tenth, is 88.3.
1. Add up all the numbers in the data set.
- Data set: 78, 79, 80, 80, 89, 89, 92, 93, 94, 95, 95, 95
- Sum = 78 + 79 + 80 + 80 + 89 + 89 + 92 + 93 + 94 + 95 + 95 + 95 = 1059
2. Count the number of data points.
- There are 12 numbers in the data set.
3. Calculate the mean.
- Mean = Total sum of the data / Number of data points
- Mean = 1059 / 12 = 88.25
4. Round the mean to the nearest tenth.
- When rounded to the nearest tenth, 88.25 becomes 88.3.
Therefore, the mean of the data set, rounded to the nearest tenth, is 88.3.