find the mean of the dataset {3.4,1.0,5.6,7.8,1.2

Answer 1

To find the mean of the dataset {3.4, 1.0, 5.6, 7.8, 1.2}, you need to add up all the numbers in the dataset and then divide by the total number of values in the dataset.

Mean = (3.4 + 1.0 + 5.6 + 7.8 + 1.2) / 5
Mean = 19 / 5
Mean = 3.8

Therefore, the mean of the dataset {3.4, 1.0, 5.6, 7.8, 1.2} is 3.8.

Answer 2

find the median of the dataset {6.1,4.8,8.8,10.5,5.2,17.4} .

Answer 3

To find the median of a dataset, you need to arrange the numbers in ascending order and then find the middle number. If the dataset has an odd number of values, the median is the middle number. If the dataset has an even number of values, the median is the average of the two middle numbers.

First, let's arrange the dataset {6.1, 4.8, 8.8, 10.5, 5.2, 17.4} in ascending order:
4.8, 5.2, 6.1, 8.8, 10.5, 17.4

Since there are 6 values in the dataset (an even number), we need to find the average of the two middle numbers (6.1 and 8.8).

Median = (6.1 + 8.8) / 2
Median = 14.9 / 2
Median = 7.45

Therefore, the median of the dataset {6.1, 4.8, 8.8, 10.5, 5.2, 17.4} is 7.45.

Answer 4

Find the mode(s) of the dataset {78,105,2,018,45,189,212,75,145,67,70} .

Answer 5

To find the mode(s) of a dataset, you need to identify the number(s) that appear most frequently in the dataset. In the dataset {78, 105, 2018, 45, 189, 212, 75, 145, 67, 70}, there are no numbers that repeat, so there is no mode in this dataset.

Therefore, the mode of the dataset {78, 105, 2018, 45, 189, 212, 75, 145, 67, 70} is "no mode".