Ünite Sınavı Soruları

1
Data : 20, 12, 16, 12, 10 ; what is the standard coefficient of skewness of these data ?
2
Which of the followings is not true about "range"?
3
The frequency distribution table of the students’ performance scores of a school were constructed as follows. What is the sample standard deviation of the data?
4
A farming company collected data about the amount of wheat (tons) sold in the last week. The data is as follows, 12, 35, 14, 25, 24, 40, 25. What is the standard deviation of the data set?
5
Data : 1.000, 1.000, 1.200, 1.200, 1.200, 1.400, 1.400, 1.500, 1.500, 1.500, 1.600, 1.600, 1.800, 1.800, 1.800, 2.000, 2.000, 2.500, 2.500, 2.500. What is the IQR of these data ?
6

Which of the followings is a kind of descriptive statistics and give information about the shape of distribution of the observations?
7
Which one of the following ones is included in a box plot ?
8
Data format : (class interval, frequency) data : (100 up to 120, 1), (120 up to 180, 2), (180 up to 200, 1), (200 up to 250, 1). What is the sample standard deviation of these data ?
9
Which of the following is not true about percentiles?
10
In a data set, what is the difference between the largest and smallest values called?