📊 statistics

1. **Problem Statement:** Find the midpoint, mean, median, mode, variance, standard deviation, and coefficients of mean, median, and mode for the frequency distribution given in QN

1. **Problem Statement:** Determine if there is a significant relationship between the scores of students in Physics and Math subjects using the given data. 2. **Data:**

1. **Problem Statement:** Find the Variance, Standard Deviation (SD), and Coefficient of Variation (CV) for the given grouped data with class intervals and frequencies. 2. **Given

1. **Problem Statement:** We have two sets of data for seven students: course averages before the final exam $X = \{69.3, 87.7, 50.5, 51.9, 80.7, 70.5, 72.4\}$ and final exam score

1. Given data for father's height $X$ and son's height $Y$: $$X = \{63, 65, 66, 67, 67, 68\}$$

1. **Stating the problem:** We are given the sales data of two types of wood (Kayu 1 and Kayu 2) from 2019 to 2023 and asked to predict the sales trend for 2024.

1. The problem is to understand the concept of "échantillonnage" (sampling) in statistics. 2. Sampling is the process of selecting a subset (sample) from a larger set (population)

1. **Problem:** Find the standard deviation of the data set: 20, 25, 30, 36, 32, 43. 2. **Formula:** The standard deviation $\sigma$ for a sample is given by:

1. **State the problem:** We need to find the Median (Md), the first quartile (Q1), and the 43rd percentile (P43) for the data set: 60, 70, 50, 80, 90, 100, 110. 2. **Sort the data

1. **State the problem:** We need to find the Median (Md), the first quartile (Q1), and the 43rd percentile (P43) for the data set: 60, 70, 50, 80, 90, 100, 110. 2. **Sort the data

1. **Problem Statement:** Find the mean, median, and mode of the data set: 5, 9, 12, 4, 5, 14, 19, 16, 3, 5, 7. 2. **Mean:** The mean is the average of all numbers. Use the formula

1. **Problem:** Work out the mean, median and mode for the data: 5, 9, 12, 4, 5, 14, 19, 16, 3, 5, 7. 2. **Mean formula:** $$\text{Mean} = \frac{\text{Sum of all data values}}{\tex

1. **Stating the problem:** We have an incomplete frequency distribution table of marks and the total number of students is 50. The mean of the distribution is given as 30.2. | Mar

1. The problem states that the mean is 30.2. 2. The mean (or average) of a set of numbers is calculated by summing all the values and dividing by the number of values.

1. **Stating the problem:** We have an incomplete frequency distribution table of marks and number of students. We need to find the missing frequencies. 2. **Given data:**

1. **Problem Statement:** We have a frequency distribution of annual commission earnings (in thousands) for 150 salespeople. We want to find the proportion of salespeople earning l

1. **Problem Statement:** We are given a frequency distribution with class intervals and frequencies. We need to: a) Compute the frequency density for each class.

1. **Problem Statement:** We have a frequency distribution of annual commission earnings (in thousands) for 150 salespeople. We want to find the proportion of salespeople earning l

1. **Problem Statement:** We have a frequency distribution of annual commission earnings (in thousands) for 150 salespeople. We want to construct an ogive (cumulative frequency gra

1. **Problem statement:** Given the expectations: $$E(y_1)=\beta_1+\beta_2+\beta_3$$

1. **Problem Statement:** We have a sample of 15 waiting times in minutes: 1.38, 2.34, 3.02, 3.20, 3.54, 3.79, 4.21, 4.50, 4.77, 5, 5.13, 5.35, 5.55, 6.10, 6.19. We need to constru