Assessment

Front

What is the definition of deciles in statistics?

Back

Deciles are values that divide a dataset into ten equal parts, each containing 10% of the data.

Front

How do you determine the decile class in grouped data?

Back

To determine the decile class, you first need to calculate the cumulative frequency and identify the class interval that contains the desired decile.

Front

What is the Lower Class Boundary of the interval [50 - 55]?

Back

49.5

Front

Is the 5th Decile the same as the mean of the grouped data?

Back

False, the 5th Decile (D5) is the median, not the mean.

Front

What is the purpose of deciles in data analysis?

Back

Deciles help in understanding the distribution of data by indicating the relative standing of values within a dataset.

Front

What is the first step in finding the 4th decile (D4) in grouped data?

Back

Determine the Class.

Front

How many equal parts do quartiles divide the data into?

Back

Quartiles divide the data into four equal parts.

Front

What is the difference between deciles and percentiles?

Back

Deciles divide data into ten equal parts, while percentiles divide data into one hundred equal parts.

Front

What does the term 'cumulative frequency' refer to?

Back

Cumulative frequency is the running total of frequencies up to a certain point in a dataset.

Front

How do you calculate the 4th decile (D4) in a frequency distribution?

Back

D4 can be calculated using the formula: D4 = L + [(N/10 - CF) / f] * c, where L is the lower boundary of the D4 class, N is the total number of observations, CF is the cumulative frequency before the D4 class, f is the frequency of the D4 class, and c is the class width.