📊 statistics

1. The problem is to prepare fixed base index numbers using 1997 as the base year. 2. The formula for fixed base index number is:

1. **State the problem:** We need to prepare fixed base index numbers using 1997 as the base year from the given price index data. 2. **Formula:** The fixed base index number for y

1. **State the problem:** We have data on the number of T-shirts ordered and the cost per shirt. We want to find a linear regression equation relating order size ($x$) to cost per

1. **Problem:** Compute the population mean, median, and mode for the first ungrouped data set given. 2. **Formula and rules:**

1. **Stating the problem:** We have a Latin square design with 4 time periods, 4 courses, 4 professors (A, B, C, D), and 4 teaching assistants (α, β, γ, δ). The goal is to test at

1. The problem involves categorizing data based on age groups and income levels, and analyzing dependent variables: satisfaction score, total spending, and purchase frequency. 2. A

1. **Problem Statement:** Analyze if customer groups defined by age and income differ significantly in satisfaction and total spending using MANOVA.

1. **Problem Statement:** Calculate the mean and variance of the discrete random variable $X$ given its values and frequencies. 2. **Data for the first distribution:**

1. **Problem Statement:** We have monthly sales data (in 000 units) for seven months: Feb(19), Mar(18), Apr(15), May(20), Jun(18), Jul(22), Aug(20). We need to forecast sales for S

1. The problem asks to identify the type of statistics used when a professor states the average age of all students based on a sample. 2. The formula or concept here is understandi

1. The problem gives a frequency distribution table with intervals of hours per day (Horas/dia), frequencies $n_i$, and cumulative relative frequencies $Fr_i$. 2. We are given part

1. **Problem Statement:** We have a binomial distribution with parameters $n=20$ and $p=0.4$. We want to decide whether to use the binomial distribution directly or approximate it

1. **State the problem:** We are given a frequency distribution of the number of people at a public concert with values $X = 2, 3, 4, 5, 6$ and corresponding frequencies $T = 4, 2,

1. The problem is to analyze the frequency distribution of the number of people attending a public concert. 2. Frequency distribution shows how many times each value or range of va

1. **Problem:** Determine which scoring criterion has the highest percentage in the beauty pageant final night scoring. 2. **Given Data:**

1. **Problem:** Find the mean attendance of 10 students in the hostel using the short method. 2. **Given data:** Attendance = 21, 15, 16, 18, 14, 17, 15, 12, 13, 11

1. **State the problem:** We have a frequency distribution of the number of sick leave days per year taken by employees and need to determine if the data is discrete or continuous,

1. **Problem statement:** We want to test if eye color and blood type are independent using the given data for 400 people. 2. **Data:**

1. **Problem statement:** We want to test if the average spelling score of girls is higher than that of boys. The population mean for boys is $\mu_0 = 75$. A sample of 144 boys has

1. The problem asks which grade value has a wrongly labeled sector angle in a pie chart. 2. Recall that the total angle in a pie chart is always $$360^\circ$$.

1. **Problem Statement:** Calculate the mean, median, and mode of the marks obtained by 15 students: 45, 52, 60, 48, 55, 62, 52, 50, 48, 45, 58, 62, 60, 55, 50. 2. **Mean:** The me