What is the mean of the array 0.35, 0.5, ¼, 0.75, 3/5, 0.25.
a. 0.25
b. 0.35
c. 0.45
d. 0.50

To find the mean of the array, we first need to convert all the fractions to decimals and then calculate the average of the numbers.

Given array: \( 0.35, 0.5, \frac{1}{4}, 0.75, \frac{3}{5}, 0.25 \)

Let's convert the fractions to decimals:
- \( \frac{1}{4} = 0.25 \)
- \( \frac{3}{5} = 0.6 \)

Now the array becomes: \( 0.35, 0.5, 0.25, 0.75, 0.6, 0.25 \)

Next, we calculate the mean:
\[
\text{Mean} = \frac{0.35 + 0.5 + 0.25 + 0.75 + 0.6 + 0.25}{6}
\]
\[
\text{Mean} = \frac{2.7}{6} = 0.45
\]

The mean of the array is \( 0.45 \).

Thus, the correct answer is:
**c. 0.45**

Would you like more details or have any questions?

Here are some related questions you might find interesting:
1. How do you calculate the mean of a larger dataset?
2. What is the median of the same array?
3. What is the mode of the array if there is one?
4. How does the mean change if one number in the array is doubled?
5. What is the variance of this array?
6. How do you calculate the mean if the array contains negative numbers?
7. How does the mean compare to the median in a skewed distribution?
8. What is the harmonic mean, and how does it differ from the arithmetic mean?

**Tip:** When dealing with fractions in a data set, converting them to decimals can make calculations easier and more intuitive.

Learn how to calculate the mean of an array containing decimals and fractions. This problem covers converting fractions to decimals, calculating the arithmetic mean, and understanding basic mathematical concepts. Suitable for students in Grades 7-9.

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