1. daily hours of practice before a concert:
1,5, 3, 4, 1,4, 1,2
mean
median
mode

The mean of a data set is equal to the sum of the set of numbers divided by how many numbers are in the set.

If we want to find the mean of the data set shown here, let's begin by adding the numbers.

1 + 5 + 3 + 4 + 1 + 4 + 1 + 2 = 21

This will be divided by how many numbers are in the set which is 8.

21 ÷ 8 = 2.625

The mean of the data set is 2.625.

The median is the middle number in the data set when the data set is written from least to greatest. So, let's write our data set from least to greatest.

1 - 1 - 1 - 2 - 3 - 4 - 4 - 5

Since there is no number that is directly in the middle, we have to add up the two numbers in the middle and divide it by 2.

2 + 3 = 5

5 ÷ 2 = 2.5

The median of the data set is 2.5.

The mode is the number that appears most frequently in a data set.

In our data set, the number 1 appears more than any other number so the mode would be 1.

The mode of the data set is 1.

1)is not similar since corresponding sides are not in the same ratio

2)are similar since corresponding sides are in the same ratio and corresponding angles are equal

hope it will

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