İSTATİSTİK I

4, 3, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 3, 2, 3, 4, 5, 6

The values are observed above in a sample.

What is the 10% winsorized mean of this sample?

Which of the following is included in Data Science?

10, 10, 11, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 16, 16, 16, 17, 17, 18, 19

What is the mode of the sample above?

II. Check the financial transactions of a company

III. Analyse large sets of data from online
purchases

------- are the entities on which the data are collected.

Which of the following completes the sentence above?

II. Gender

III. Age

II. All the pictures posted on Instagram in one
day in Turkey

III. All data that are very large numbers, every
value in the billions and trillions.

II. Error in sampling

III. Error in measurement

Frequency

[10- up to 15)

1

[15- up to 20)

3

[20- up to 25)

5

[25- up to 30)

6

[30- up to 35)

20

[35- up to 40)

8

[40- up to 45)

5

[45- up to 50)

2

About a dot plot, which of the following is not true?

II. Sometimes there is no mode

III. Middle number in ordered data by magnitude

Frequency

2 – 4

9

4 – 6

17

6 – 8

24

8 - 10

16

10 - 12

6

Total

72

Calculate the average growth rate for an organism that has been observed to grow 3%, 4%, 5%, 6%, 6%, 2% every ten minutes during the last hour using the geometric mean?

What is the first role of statistics?

A researcher has collected data from some flower species. There are 90 observations in her sample. She measured a certain characteristic of the individual flowers and she would like to create a grouped frequency distribution for the measured variable.

How many classes should she create?